Manual b1620-b1820

OPERATOR'S MANUAL
MODELS B1620B1820
English (Europe)
Code No. 6C392-9210-4
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READ AND SAVE THIS MANUAL

PRINTED IN JAPAN
KUBOTA Corporation 2009
ABBREVIATION LIST
Abbreviations
Definitions
2WD
Two Wheel Drive
4WD
Four Wheel Drive
API
American Petroleum Institute
ASABE
American Society of Agricultural and Biological Engineers, USA
ASTM
American Society for Testing and Materials, USA
DIN
Deutsches Institut fr Normung, GERMANY
DT
Dual Traction (4WD)
fpm
Feet Per Minute
GST
Glide Shift Transmission
Hi-Lo
High Speed-Low Speed
HST
Hydrostatic Transmission
m/s
Meters Per Second
PTO
Power Take Off
KUBOTA Corporation is
Since its inception in 1890, KUBOTA Corporation has grown to
rank as one of the major firms in Japan.
To achieve this status, the company has through the years
diversified the range of its products and services to a remarkable
extent. Nineteen plants and 16,000 employees produce over 1,000
different items, large and small.
RH/LH
Right-hand and left-hand sides are determined by facing

in the direction of forward travel
ROPS
Roll-Over Protective Structures
rpm
Revolutions Per Minute
r/s
Revolutions Per Second
SAE
Society of Automotive Engineers, USA
SMV
Slow Moving Vehicle
All these products and all the services which accompany them,
however, are unified by one central commitment. KUBOTA makes
products which, taken on a national scale, are basic necessities.
Products which are indispensable. Products which are intended to
help individuals and nations fulfill the potential inherent in their
environment. KUBOTA is the Basic Necessities Giant.
This potential includes water supply, food from the soil and from
the sea, industrial development, architecture and construction,
transportation.
Thousands of people depend on KUBOTA's know-how, technology,
experience and customer service. You too can depend on
KUBOTA.
Intended use
This machine is designed solely for use in customary agricultural or similar operations. Use in any other way is
considered as contrary to the intended use. Compliance with and strict adherence to the conditions of operation,
service, and repair as specified by the manufacturer, also constitute essential elements of the intended use.
This machine should be operated, serviced, and repaired only by persons who are familiar with its particular
characteristics and who are acquainted with the relevant safety procedures.
Accident prevention regulations, all other generally recognized regulations on safety and occupational medicine,
and all road traffic regulations must be observed at all times.
Any arbitrary modifications carried out to this machine may relieve the manufacturer of liability for any resulting
damage or injury.
manufacturer or distributor of the machine
the model designation of the machine
the name or type of publication
the part number or publication number by which
the manual may be ordered
the date of issue
the publication date
the language in which the manual is written
Kubota Corporation
B1620/B1820
Operator's Manual
6C392-9210-4
May 8, 2008
March 13, 2012
English
B1620 / 1820 English (Europe)

AQ . K . 9 - 9 . 0 . AK
UNIVERSAL SYMBOLS
As a guide to the operation of your tractor, various universal symbols have been utilized on the instruments and
controls. The symbols are shown below with an indication of their meaning.
Safety Alert Symbol
Differential Lock
Diesel Fuel
Position Control-Raised Position
Fuel-Level
Position Control-Lowered Position
Engine-Rotational Speed
3-Point Lowering Speed Control
Hourmeter/Elapsed Operating Hours
Remote Cylinder-Retract
Engine Coolant-Temperature
Remote Cylinder-Extend
Brake
Hazard Warning Lights
Parking Brake
Position Lamps
Battery Charging Condition
Headlight
Engine Oil-Pressure
Four-Wheel Drive-On
Turn Signal
Four-Wheel Drive-Off
Engine-Stop
Fast
Engine-Run
Slow
Diesel Preheat/Glow Plugs(Low Temperature

Start Aid)
Read Operator's Manual

Engine Speed Control
Starter Control
Power Take-Off Control-Off Position
(Disengaged)
Power Take-Off Control-On Position (Engaged)
FOREWORD
You are now the proud owner of a KUBOTA Tractor. This tractor is a product of
KUBOTA quality engineering and manufacturing. It is made of fine materials and
under a rigid quality control system. It will give you long, satisfactory service. To
obtain the best use of your tractor, please read this manual carefully. It will help you
become familiar with the operation of the tractor and contains many helpful hints
about tractor maintenance. It is KUBOTA's policy to utilize as quickly as possible
every advance in our research. The immediate use of new techniques in the
manufacture of products may cause some small parts of this manual to be
outdated. KUBOTA distributors and dealers will have the most up-to-date
information. Please do not hesitate to consult with them.
3 SAFETY FIRST
This symbol, the industry's "Safety Alert Symbol", is used throughout this manual
and on labels on the machine itself to warn of the possibility of personal injury.
Read these instructions carefully. It is essential that you read the instructions and
safety regulations before you attempt to assemble or use this unit.
3
3
3
DANGER :
Indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.
WARNING :
Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.
CAUTION :
Indicates a potentially hazardous situation which, if not

avoided, may result in minor or moderate injury.
IMPORTANT :
Indicates that equipment or property damage could result if

instructions are not followed.
NOTE :
Gives helpful information.
CONTENTS
SAFE OPERATION ............................................................................................
-1
SERVICING OF TRACTOR......................................................................................... 1
SPECIFICATIONS....................................................................................................... 2
SPECIFICATION TABLE ......................................................................................... 2
TRAVELING SPEEDS ............................................................................................. 4
IMPLEMENT LIMITATIONS ........................................................................................ 5
INSTRUMENT PANEL AND CONTROLS................................................................... 7
PRE-OPERATION CHECK ....................................................................................... 10
DAILY CHECK ....................................................................................................... 10
OPERATING THE ENGINE....................................................................................... 11
STARTING THE ENGINE ...................................................................................... 11
Block Heater (Option) ..................................................................................................... 13
STOPPING THE ENGINE...................................................................................... 14

WARMING UP ....................................................................................................... 14
Warm-up Transmission Oil at Low Ambient Temperatures ............................................ 14
JUMP STARTING .................................................................................................. 15

OPERATING THE TRACTOR ................................................................................... 16
OPERATING NEW TRACTOR .............................................................................. 16
Do not Operate the Tractor at Full Speed for the First 50 Hours.................................... 16
Changing Lubricating Oil for New Tractors..................................................................... 16
BOARDING AND LEAVING THE TRACTOR ........................................................ 16

OPERATING FOLDABLE ROPS (OPTION).......................................................... 16
To Fold the ROPS .......................................................................................................... 16
To Raise the ROPS to Upright Position.......................................................................... 17
STARTING ............................................................................................................. 18
Operator's Seat............................................................................................................... 18
Seat Belt ......................................................................................................................... 19
Head Light Switch........................................................................................................... 19
Turn Signal / Hazard Light Switch .................................................................................. 20
Horn Button..................................................................................................................... 20
Tractor Lights.................................................................................................................. 21
Brake Pedals (Right and Left)......................................................................................... 21
Clutch Pedal ...................................................................................................................22
Main Gear Shift Lever & Range Gear Shift Lever (L-H) ................................................. 22
Front Wheel Drive Lever................................................................................................. 23
Hand Throttle Lever ........................................................................................................ 23
Foot Throttle ................................................................................................................... 23
Parking Brake ................................................................................................................. 23
STOPPING............................................................................................................. 24
Stopping.......................................................................................................................... 24
CHECK DURING DRIVING ................................................................................... 24

Immediately Stop the Engine if: ...................................................................................... 24
Easy Checker (TM)......................................................................................................... 24
CONTENTS
Fuel Gauge .....................................................................................................................24
Coolant Temperature Gauge .......................................................................................... 25
Hourmeter / Tachometer................................................................................................. 25
PARKING ............................................................................................................... 26
Parking............................................................................................................................ 26
OPERATING TECHNIQUES ................................................................................. 26

Differential Lock .............................................................................................................. 26
Operating the Tractor on a Road .................................................................................... 26
Operating on Slopes or Rough Terrain........................................................................... 27
Transport the Tractor Safely ........................................................................................... 27
Directions for Use of Power Steering.............................................................................. 27
Trailer Electrical Outlet ................................................................................................... 27
PTO ........................................................................................................................... 29
PTO OPERATION.................................................................................................. 29
PTO Gear Shift lever ...................................................................................................... 29
PTO shaft Cover and Shaft Cap ..................................................................................... 30
Stationary PTO ............................................................................................................... 30
THREE-POINT HITCH & DRAWBAR........................................................................ 32

3-POINT HITCH ..................................................................................................... 33
Selecting the holes of lifting rods and lower links ........................................................... 33
Selecting the Top Link Mounting Holes .......................................................................... 33
Drawbar(if equipped) ...................................................................................................... 33
Lifting Rod (Right)........................................................................................................... 33
Top Link .......................................................................................................................... 33
Check Chains ................................................................................................................. 34
DRAWBAR (if equipped)........................................................................................ 34

FRONT HITCH (if equipped).................................................................................. 34
HYDRAULIC UNIT..................................................................................................... 35
3-POINT HITCH CONTROL SYSTEM................................................................... 35
Hydraulic Control ............................................................................................................ 35
Implement Lowering Limit............................................................................................... 35
3-point Hitch Lowering Speed......................................................................................... 36
AUXILIARY HYDRAULICS .................................................................................... 36

Hydraulic Block Type Outlet ........................................................................................... 36
Rear outlet ...................................................................................................................... 37
Hydraulic Control Unit Use Reference Chart .................................................................. 38
TIRES, WHEELS AND BALLAST.............................................................................. 39

TIRES..................................................................................................................... 39
Inflation Pressure............................................................................................................ 39
Dual Tires ....................................................................................................................... 39
WHEEL ADJUSTMENT ......................................................................................... 39

Front Wheels .................................................................................................................. 40
Rear Wheels ................................................................................................................... 41
BALLAST ............................................................................................................... 42
Front Ballast.................................................................................................................... 42
Rear Ballast .................................................................................................................... 43
Maximum Masses........................................................................................................... 43
MAINTENANCE......................................................................................................... 44
CONTENTS
SERVICE INTERVALS .......................................................................................... 44

LUBRICANTS,FUEL AND COOLANT ................................................................... 45
PERIODIC SERVICE................................................................................................. 47
HOW TO OPEN THE HOOD ................................................................................. 47
Hood ............................................................................................................................... 47
Front Grille ...................................................................................................................... 47
Engine Side Cover.......................................................................................................... 48
DAILY CHECK ....................................................................................................... 48

Walk Around Inspection.................................................................................................. 48
Checking and Refueling.................................................................................................. 49
Checking Engine Oil Level.............................................................................................. 49
Checking Transmission Fluid Level ................................................................................ 50
Checking Coolant Level.................................................................................................. 50
Cleaning Grill and Radiator Screen ................................................................................ 51
Checking Brake Pedals and Clutch Pedal ...................................................................... 51
Checking Parking Brake ................................................................................................. 51
Checking Gauges, Meter and Easy Checker(TM) .......................................................... 51
Checking Head Light, Hazard Light etc. ......................................................................... 51
Checking Seat Belt and ROPS (if equipped) .................................................................. 51
Checking and Cleaning of Electrical Wiring and Battery Cables .................................... 52
Checking Movable Parts................................................................................................. 52
EVERY 50 HOURS ................................................................................................ 52

Lubricating Grease Fittings............................................................................................. 52
Checking Engine Start System ....................................................................................... 53
Checking Wheel Bolt Torque .......................................................................................... 54
EVERY 100 HOURS .............................................................................................. 54

Checking Battery Condition ............................................................................................ 54
Cleaning Air Cleaner Element [Single Element Type] .................................................... 55
Cleaning Air Cleaner Primary Element [Double Element Type](if equipped) ................. 56
Cleaning Fuel Filter......................................................................................................... 56
Adjusting Fan Belt Tension............................................................................................. 57
Adjusting Clutch Pedal.................................................................................................... 58
Adjusting Brake Pedal .................................................................................................... 58
Adjusting Parking Brake ................................................................................................. 59
Checking Fuel Line ......................................................................................................... 59
EVERY 200 HOURS .............................................................................................. 60

Replacing Engine Oil Filter ............................................................................................. 60
Changing Engine oil........................................................................................................ 60
Checking Radiator Hose and Clamp .............................................................................. 60
Checking Intake Air Line................................................................................................. 61
EVERY 400 HOURS .............................................................................................. 61

Changing Transmission Fluid/Replacing Hydraulic Oil Filter.......................................... 61
Replacing Fuel Filter Element......................................................................................... 62
Changing Front Axle Case Oil ........................................................................................ 62
EVERY 800 HOURS .............................................................................................. 63

Adjusting Engine Valve Clearance ................................................................................. 63
EVERY 1500 HOURS ............................................................................................ 63

Checking Fuel Injection Nozzle Injection Pressure......................................................... 63
EVERY 3000 HOURS ............................................................................................ 63

Checking Injection Pump ................................................................................................ 63
EVERY 1 YEAR ..................................................................................................... 63
CONTENTS
Replacing Air Cleaner Element....................................................................................... 63
Replacing Air Cleaner Primary Element and Secondary Element.................................. 63
EVERY 2 YEARS................................................................................................... 63
Flushing Cooling System and Changing Coolant ........................................................... 63
Anti-Freeze ..................................................................................................................... 64
Replacing Radiator Hose (Water pipes) ......................................................................... 65
Replacing Fuel Lines ...................................................................................................... 65
Replacing Intake Air Line................................................................................................ 65
SERVICE AS REQUIRED...................................................................................... 65
Bleeding Fuel System..................................................................................................... 65
Draining Clutch Housing Water ...................................................................................... 65
Replacing Fuse............................................................................................................... 66
Replacing Light Bulb....................................................................................................... 66
STORAGE ................................................................................................................. 67
TRACTOR STORAGE ........................................................................................... 67
REMOVING THE TRACTOR FROM STORAGE................................................... 67
TROUBLESHOOTING............................................................................................... 68
ENGINE TROUBLESHOOTING ............................................................................ 68
OPTIONS................................................................................................................... 69
APPENDICES............................................................................................................ 70
MAXIMUM MASSES.............................................................................................. 70
Maximum Permissible Load of The Tire
(Applicable Only in Running on The Public Road).......................................................... 70
Trailer Load Capacity...................................................................................................... 73
INDEX .................................................................................................................... 74
SAFE OPERATION
-1
SAFE OPERATION
Careful operation is your best insurance against an
accident.
Read and understand this manual carefully before
operating the tractor.
All operators, no matter how much experience they may
have, should read this and other related manuals before
operating the tractor or any implement attached to it. It is
the owner's obligation to instruct all operators in safe
operation.
11. The narrower the tread, the greater the risk of a tractor
upset. For maximum stability, adjust the wheels to the
widest practical tread width for your application. (See
"TIRES, WHEELS AND BALLAST" section.)
1. BEFORE OPERATING THE TRACTOR

1. Know your equipment and its limitations. Read this
entire manual before attempting to start and operate
the tractor.
2. Pay special attention to pictorial safety labels on the
tractor.
3. Do not operate tractor or any implement attached to it
while under the influence of alcohol, medication,
controlled substances or while fatigued.
4. Carefully check the vicinity before operating tractor or
any implement attached to it. Check for overhead
clearance which may interfere with a CAB or ROPS.
Do not allow any bystanders around or near tractor
during operation.
5. Before allowing other people to use your tractor,
explain how to operate and have them read this
manual before operation.
6. Never wear loose, torn, or bulky clothing around
tractor. It may catch on moving parts or controls,
leading to the risk of an accident. Use additional safety
items, e.g. hard hat, safety boots or shoes, eye and
hearing protection, gloves, etc., as appropriate or
required.
7. Do not allow passengers to ride on any part of the
tractor at anytime. The operator must remain in the
tractor seat during operation.
8. Check brakes, clutch, linkage pins and other
mechanical parts for improper adjustment and wear.
Replace worn or damaged parts promptly. Check the
tightness of all nuts and bolts regularly. (For further
details, see "MAINTENANCE" section.)
9. Keep your tractor clean. Dirt, grease, and trash build
up may contribute to fires and lead to personal injury.
10. Use proper weights on the front or rear of the tractor to
reduce the risk of upsets. When using the front loader,
put an implement or ballast on the 3-point hitch to
improve stability. Follow the safe operating
procedures specified in the implement or attachment
manual.
(1) Rear wheels
(A) Tread Width
12. Do not modify the tractor. Unauthorized modification

may affect the function of the tractor, which may result
in personal injury.
C CAB, ROPS
1. KUBOTA recommends the use of a CAB or Roll Over
Protective Structures (ROPS) and seat belt in almost
all applications. This combination will reduce the risk
of serious injury or death, should the tractor be upset.
Check for overhead clearance which may interfere
with a CAB or ROPS.
2. Set parking brake and stop engine. Remove any
obstruction that may prevent raising or folding of the
ROPS. Do not allow any bystanders. Always perform
function from a stable position at the rear of the tractor.
Hold the top of the ROPS securely when raising or
folding. Make sure all pins are installed and locked.
3. If the CAB or ROPS is loosened or removed for any
reason, make sure that all parts are reinstalled
correctly before operating the tractor.
4. Never modify or repair any structural member of a
CAB or ROPS because welding, bending, drilling,
grinding, or cutting may weaken the structure.
5. A damaged CAB or ROPS structure must be replaced,
not repaired or revised.
6. If any structural member of the CAB or ROPS is
damaged, replace the entire structure at your local
KUBOTA Dealer.
-2
SAFE OPERATION
7. If the tractor is equipped with a foldable ROPS it may

be temporarily folded down only when absolutely
necessary for areas with height constraints.
(There is no operator protection provided by the ROPS
in the folded position. For operator safety the ROPS
should be placed in the upright and locked position
and the seat belt fastened for all other operations.)
8. Always use the seat belt if the tractor has a CAB or
ROPS.
Do not use the seat belt if a foldable ROPS is down or
there is no ROPS. Check the seat belt regularly and
replace if frayed or damaged.
3. Do not start engine by shorting across starter

terminals or bypassing the safety start switch.
Machine may start in gear and move if normal starting
circuitry is bypassed.
4. Do not operate or idle engine in a non-ventilated area.
Carbon monoxide gas is colorless, odorless, and
deadly.
5. Check before each use that operator presence
controls are functioning correctly. Test safety systems.
(See "Checking Engine Start System" in "EVERY 50
HOURS" in "PERIODIC SERVICE" section.)
Do not operate unless they are functioning correctly.
C Working
1. Pull only from the hitch devices. Never hitch to axle
housing or any other point except drawbar; such
arrangements will increase the risk of serious personal
injury or death due to a tractor upset.
(1) ROPS
(2) Seat belt
2. OPERATING THE TRACTOR

Operator safety is a priority. Safe operation, specifically
with respect to overturning hazards, entails understanding
the equipment and environmental conditions at the time of
use. Some prohibited uses which can affect overturning
hazards include traveling and turning with implements
and loads carried too high etc. This manual sets forth
some of the obvious risks, but the list is not, and cannot
be, exhaustive. It is the operator's responsibility to be alert
for any equipment or environmental condition that could
compromise safe operation.
C Starting
1. Always sit in the operator's seat when starting engine
or operating levers or controls. Adjust seat per
instructions in the operating the tractor section. Never
start engine while standing on the ground.
2. Before starting the engine, make sure that all levers
are in their neutral positions, that the parking brake is
engaged, and that both the clutch and the Power
Take-Off (PTO) are disengaged or "OFF".
Fasten the seat belt if the tractor has a CAB, a fixed
ROPS or a foldable ROPS in the upright and locked
position.
(1) Drawbar
2. Keep all shields and guards in place. Replace any that

are missing or damaged.
3. Avoid sudden starts. To avoid upsets, slow down
when turning, on uneven ground, and before stopping.
4. The tractor cannot turn with the differential locked and
attempting to do so could be dangerous.
5. Do not operate near ditches, holes, embankments, or
other ground surface features which may collapse
under the tractor's weight. The risk of tractor upset is
even higher when the ground is loose or wet. Tall
grass can hide obstacles, walk the area first to be sure.
6. Watch where you are going at all times. Watch for and
avoid obstacles. Be alert at row ends, near trees, and
other obstructions.
7. When working in groups, always let the others know
what you are going to do before you do it.
8. Never try to get on or off a moving tractor.
9. Always sit in the operator's seat when operating levers
or controls.
10. Do not stand between tractor and implement or trailed
vehicle unless parking brake is applied.
SAFE OPERATION
C Safety for children

Tragedy can occur if the operator is not alert to the
presence of children. Children generally are attracted to
machines and the work they do.
1. Never assume that children will remain where you last
saw them.
2. Keep children out of the work area and under the
watchful eye of another responsible adult.
3. Be alert and shut your machine down if children enter
the work area.
4. Never carry children on your machine. There is no safe
place for them to ride. They may fall off and be run
over or interfere with your control of the machine.
5. Never allow children to operate the machine even
under adult supervision.
6. Never allow children to play on the machine or on the
implement.
7. Use extra caution when backing up. Look behind and
down to make sure area is clear before moving.
C Operating on slopes
Slopes are a major factor related to loss-of-control and tipover accidents, which can result in severe injury or death.
All slopes require extra caution.
1. To avoid upsets, always back up steep slopes. If you
cannot back up the slope or if you feel uneasy on it, do
not operate on it. Stay off slopes too steep for safe
operation.
2. Driving forward out of a ditch, mired condition or up a
steep slope increases the risk of a tractor to be upset
backward. Always back out of these situations. Extra
caution is required with four-wheel drive models
because their increased traction can give the operator
false confidence in the tractor's ability to climb slopes.
3. Keep all movement on slopes slow and gradual. Do
not make sudden changes in speed, direction or apply
brake and make sudden motions of the steering
wheel.
4. Avoid disengaging the clutch or changing gears speed
when climbing or going down a slope. If on a slope
disengaging the clutch or changing gears to neutral
could cause loss of control.
5. Special attention should be made to the weight and
location of implements and loads as such will affect the
stability of the tractor.
6. To improve stability on slope, set widest wheel tread
as shown in "TIRE, WHEEL AND BALLAST" section.
Follow recommendations for proper ballasting.
C Driving the tractor on the road
1. Lock the two brake pedals together to help assure
straight-line stops. Uneven braking at road speeds
could cause the tractor to tip over.
(1) Brake Pedal (LH)

(2) Brake Pedal (RH)
(3) Brake Pedal Lock
-3
(A) Whenever travelling on the road
2. Check the front wheel engagement. The braking

characteristics are different between two and four
wheel drive. Be aware of the difference and use
carefully.
3. Always slow the tractor down before turning. Turning
at high speed may tip the tractor over.
4. Observe all local traffic and safety regulations.
Use the number plate as required.
(1) Number plate
5. Turn the headlights on. Dim them when meeting

another vehicle.
6. Drive at speeds that allow you to maintain control at all
times.
7. Do not apply the differential lock while traveling at road
speeds. The tractor may run out of control.
8. Avoid sudden motions of the steering wheel as they
can lead to a dangerous loss of stability. The risk is
especially great when the tractor is traveling at road
speeds.
9. Keep the ROPS in the "UP" position and wear the seat
belt when driving the tractor on the road.
Otherwise, you will not be protected in the event of a
tractor roll-over.
-4
SAFE OPERATION
10. Do not operate an implement while the tractor is on the

road. Lock the 3-point hitch in the raised position.
11. For trailing PTO-driven implements, set the hitch
devices to the towing position.
12. Attach pulled or towed loads to the hitch devices only.
3. PARKING THE TRACTOR

1. Disengage the PTO, lower all implements to the
ground, place all control levers in their neutral
positions, set the parking brake, stop the engine,
remove the key from the ignition and lock the cab door
(if equipped). Leaving transmission in gear with the
engine stopped will not prevent tractor from rolling.
2. Make sure that the tractor has come to a complete
stop before dismounting.
3. Avoid parking on steep slopes, if at all possible park on
a firm and level surface; if not, park across a slope with
chock the wheels.
Failure to comply with this warning may allow the
tractor to move and could cause injury or death.
4. When parking your machine if at all possible park on a
firm, flat and level surface; if not, park across a slope.
Set the parking brake(s), lower the implements to the
ground, remove the key from the ignition and lock the
cab door (if equipped) and chock the wheels.
3. Before installing or using PTO driven equipment, read

the manufacturer's manual and review the safety
labels attached to the equipment.
To prevent PTO driven equipment from improper or
unsafe use, select the lower speed (540rpm) unless
the higher one is specifically recommended as safe by
the equipment manufacture.
4. When operating stationary PTO driven equipment,
always apply the tractor parking brake and place
chocks behind and in front of the rear wheels. Stay
clear of all rotating parts. Never step over rotating
parts.
5. USING 3-POINT HITCH

1. Use the 3-point hitch only with equipment designed for
3-point hitch usage.
2. When using a 3-point hitch mounted implement, be
sure to install the proper counterbalance weight on the
front of the tractor.
3. When transporting on the road, set the implement
lowering speed knob in the "LOCK" position to hold the
implement in the raised position.
4. OPERATING THE PTO

1. Wait until all moving components have completely
stopped before getting off the tractor, connecting,
disconnecting, adjusting, cleaning, or servicing any
PTO driven equipment.
2. Keep the PTO shaft cover in place at all times.
Replace the PTO shaft cap when the shaft is not in
use.
(1) 3-point hitch lowering speed knob
(A) "FAST"
(B) "SLOW"
(C) "LOCK"
6. SERVICING THE TRACTOR

Before servicing the tractor, park it on a firm, flat and level
surface, set the parking brake, lower all implements to the
ground, place the gear shift lever in neutral, stop the
engine and remove the key.
1. Allow the tractor time to cool off before working on or
near the engine, muffler, radiator, etc.
(1) PTO Shaft cover

(2) PTO Shaft cap
SAFE OPERATION
2. Do not remove radiator cap while coolant is hot. When

cool, slowly rotate cap to the first stop and allow
sufficient time for excess pressure to escape before
removing the cap completely. If the tractor has a
coolant recovery tank, add coolant or water to the tank,
not the radiator. (See "Checking Coolant Level" in
"DAILY CHECK" in "PERIODIC SERVICE" section.)
3. Always stop the engine before refueling. Avoid spills
and overfilling.
4. Do not smoke when working around battery or when
refueling. Keep all sparks and flames away from
battery and fuel tank. The battery presents an
explosive hazard, because it gives off hydrogen and
oxygen especially when recharging.
5. Before "jump starting" a dead battery, read and follow
all of the instructions. (See "JUMP STARTING" in
"OPERATING THE ENGINE" section.)
6. Keep first aid kit and fire extinguisher handy at all
times.
7. Disconnect the battery's ground cable before working
on or near electric components.
8. To avoid the possibility of battery explosion, do not use
or charge the refillable type battery if the fluid level is
below the LOWER ( lower limit level ) mark. Check the
fluid level regularly and add distilled water as required
so that the fluid level is between the UPPER and
LOWER levels.
9. To avoid sparks from an accidental short circuit,
always disconnect the battery's ground cable (-) first
and reconnect it last.
(1) Battery
10. Do not attempt to mount a tire on a rim. This should be

done by a qualified person with the proper equipment.
11. Always maintain the correct tire pressure. Do not
inflate tires above the recommended pressure shown
in the operator's manual.
-5
12. Securely support the tractor when either changing

wheels or adjusting the wheel tread width.
13. Make sure that wheel bolts have been tightened to the
specified torque.
14. Do not work under any hydraulically supported
devices. They can settle, suddenly leak down, or be
accidentally lowered. If it is necessary to work under
tractor or any machine elements for servicing or
adjustment, securely support them with stands or
suitable blocking beforehand.
15. Escaping hydraulic fluid under pressure has sufficient
force to penetrate skin, causing serious personal
injury. Before disconnecting hydraulic lines, be sure to
release all residual pressure. Before applying
pressure to the hydraulic system, make sure that all
connections are tight and that all lines, pipes, and
hoses are free of damage.
-6
SAFE OPERATION
16. Fluid escaping from pinholes may be invisible. Do not

use hands to search for suspected leaks; use a piece
of cardboard or wood. Use of safety goggles or other
eye protection is also highly recommended. If injured
by escaping fluid, see a medical doctor at once. This
fluid will produce gangrene or severe allergic reaction.
(1) Cardboard
(2) Hydraulic line
(3) Magnifying glass
17. Waste products such as used oil, fuel, hydraulic fluid,

and batteries, can harm the environment, people, pets
and wildlife. Please dispose properly.
See your local Recycling Center or KUBOTA Dealer to
learn how to recycle or get rid of waste products.
SAFE OPERATION
-7
7. PICTORIAL SAFETY LABELS

The pictorial safety labels affixed are intended to alert persons to potential hazards. The hazard is identified by a pictorial
in the safety alert triangle or by the safety alert symbol alone. An adjacent pictorial provides instructions and information
on how to avoid the hazard.
-8
SAFE OPERATION
8. CARE OF PICTORIAL SAFETY LABELS

1.
2.
3.
4.
Keep pictorial safety labels clean and free from obstructing material.
Clean pictorial safety labels with soap and water, dry with a soft cloth.
Replace damaged or missing pictorial safety labels with new labels from your local KUBOTA Dealer.
If a component with pictorial safety label(s) affixed is replaced with new part, make sure new label(s) is (are) attached
in the same location(s) as the replaced component.
5. Mount new pictorial safety labels by applying on a clean dry surface and pressing any bubbles to outside edge.
SERVICING OF TRACTOR
SERVICING OF TRACTOR
Your dealer is interested in your new tractor and has the
desire to help you get the most value from it. After reading
this manual thoroughly, you will find that you can do some
of the regular maintenance yourself.
However, when in need of parts or major service, be sure
to see your KUBOTA Dealer.
For service, contact the KUBOTA Dealership from which
you purchased your tractor or your local KUBOTA Dealer.
When in need of parts, be prepared to give your dealer
both the tractor and engine serial numbers.
Locate the serial numbers now and record them in the
space provided.
Type
Serial No.
Tractor
(1) Tractor identification plate

(2) Tractor serial number
Engine
Date of Purchase
Name of Dealer
(To be filled in by purchaser)
C Warranty
This tractor is warranted under the KUBOTA Limited
Express Warranty, a copy of which may be obtained from
your selling dealer. No warranty shall, however, apply if
the tractor has not been handled according to the
instruction given in the Operator's Manual even it is within
the warranty period.
C Scrapping the tractor and its procedure
To put the tractor out of service, correctly follow the local
rules and regulations of the country or territory where you
scrap it. If you have questions, consult your local
KUBOTA Dealer.
(1) Engine serial number
SPECIFICATIONS
SPECIFICATIONS
SPECIFICATION TABLE
Model
PTO power*1
B1620D
kW (PS)
B1820D
9.2 (12.5)
10.7 (14.5)
Maker
KUBOTA
Model
D722-E3-D25
D782-E3-D25
Type
Indirect Injection. Vertical, water-cooled,4cycle diesel
Number of cylinders
Engine
3
mm
67 x 68
67 x 73.6
Total displacement
cm
719
778
11.8 (16.0)
13.2 (18.0)
kW (PS)
Rated revolution
rpm
Maximum torque
N-m (kgf-m)
2800
40.5 (4.1)
Battery
Diesel fuel No.2 [above -10

Diesel fuel No.1 [below -10
],
]
Fuel tank
14
Engine crankcase (with filter)
2.4
Engine coolant
3.4
Transmission case
10.5
Overall length (with 3P)
mm
2360
Overall width
mm
932
927
Overall height (Top of steering

wheel)
mm
1235
1255
Wheel base
mm
Minimum ground clearance
mm
250
270
Front
mm
778
767
Rear
mm
707 to 1035
743 to 1035
510
520
Tread
Weight
kg
1270
Clutch
Dry single plate

Tires
Traveling
system
45.0 (4.6)
12V, RC: 70 min, CCA: 400A
Fuel
Dimensions
D782-E3-D25P
Bore and stroke
Engine gross power*1
Capacities
B1820DS
Front
4.5 - 10
5 - 12
Rear
7 - 16
8 - 16
Steering
Manual
Transmission
Gear-shift, 6 forward and 2 reverse
Brake
Minimum turning radius (with
brake)
Power steering
Wet disk type

m
1.8
SPECIFICATIONS
Model
B1620D
Hydraulic control system

Pump capacity
Hydraulic
unit
L / min
SAE Category 1
At lift points
kg
540
600 mm behind
lift point
kg
410
SAE 1-3/8, 6 splines
PTO / Engine
speed
rpm
Mid-PTO
540 / 2773, 1000 / 2722

USA No.5 (KUBOTA 10-tooth) involute spline
PTO / Engine
speed
rpm
The level of protection against hazardous substances *2

Noise at the operator's ear *3
Noise of the tractor
in motion *4
COBO
SC74 / M91
Value of the
vibration
level *5
SEARS
607
KAB
XH2 / P1
3P: 14.1, Power

Steering: 8.6
3P : 14.1
Rear-PTO
PTO
B1820DS
Up and down type control valve
Three point hitch

Max. lift force
B1820D
2500 / 2750
Category 1
with ROPS
dB(A)
86.0
without ROPS
dB(A)
85.0
with ROPS
dB(A)
79.0
without ROPS
dB(A)
78.0
Light driver
m/s
1.13
Heavy driver
m/s
0.75
Light driver
m/s
1.24
Heavy driver
m/s
1.06
Light driver
m/s
1.17
Heavy driver
m/s
0.93
The company reserves the right to change the specifications without notice.
NOTE: *1 Manufacturer's estimate
*2 According to EN 15695-1:2009
*3 Measured according to Directive 2009/76/EC
*4 Measured according to Directive 2009/63/EC
*5 Measured according to Directive 78/764/EEC
SPECIFICATIONS
TRAVELING SPEEDS
Model
B1620D
B1820D/B1820DS
Tire size (Rear)
7 - 16 Farm
8 - 16 Farm
Main gear shift

lever
km / h
km / h
0.88
0.94
1.59
1.70
2.88
3.07
4.90
5.24
8.86
9.46
16.05
17.13
Range gear
shift lever
1
2
Forward
Reverse
(At rated engine rpm)
Low
High
Max.Speed
(at 2950 engine rpm)
16.91
18.05
Low
R/AR
1.18
1.26
High
R/AR
6.57
7.01
Max.Speed
(at 2950 engine rpm)
6.92
7.39
The company reserves the right to change the specification without notice.
IMPLEMENT LIMITATIONS
The KUBOTA Tractor has been thoroughly tested for
proper performance with implements sold or approved by
KUBOTA. Use with implements which are not sold or
approved by KUBOTA and which exceed the maximum
specifications listed below, or which are otherwise unfit for
use with the KUBOTA Tractor may result in malfunctions
or failures of the tractor, damage to other property and
injury to the operator or others. [Any malfunctions or
failures of the tractor resulting from use with improper
implements are not covered by the warranty.]
[Attach the Sub Frame]
B Front Loader [LA213]

C Fixation points on the body of the tractor where
the front loader must be installed.
[Attach the Main Frame]
(1) Sub frame
(2) 4-M12 x 50 bolts
C OUTPUT CAPACITY
Max. Lifting Capacity
(bucket pivot pin, MAX. Height):
302 kg
Max. Oil Pressure
13.0 MPa (133 kgf/cm )
A The value of MAX. Lifting capacity contains the weight
of KUBOTA standard bucket.
(1) Main frame

(2) 4-M14 x 60 bolts
4-M14 spring washers
4-M14 plain washers
(3) 4-M12 x 45 sems bolts
4-M12 plain washers
(4) 4-M12 x 55 bolts
4-M12 nuts
4-M12 spring washers
4-M12 plain washers
Tightening torque: 90.1 N-m (9.2 kgf-m) (M12)
147 N-m (15.0 kgf-m) (M14)
To avoid personal injury:

A Special attention should be made when lifting
the load, keep the bucket correctly positioned
to prevent spillages.
A Not all risks are listed.
Refer to front loader operator's manual.
B OTHER IMPLEMENTS
A For selecting implements, consult your local dealer.
A Strictly follow the instructions outlined in the operators
manual of the mounted or trailed machinery or trailer,
and do not operate the combination tractor - machine
or tractor - trailer unless all instructions have been
followed.
A Forestry Application
Following hazards exist;
(a) toppling trees, primarily in case a rear-mounted
tree grab-crane is mounted at the rear of the tractor;
(b) penetrating objects in the operators enclosure,
primarily in case a winch is mounted at the rear of the
tractor.
Optional equipments such as OPS (Operator
Protective Structure), FOPS (Falling Object Protective
Structure), etc. to deal with these hazards and other
related hazards are not available for this tractor.
Without such optional equipment use is limited to
tractor specific applications like transport and
stationary work.
INSTRUMENT PANEL AND CONTROLS

B Instrument Panel, Switches and Hand Controls
ILLUSTRATED CONTENTS
(1) Turn signal / Hazard light indicator .......................
(2) Coolant temperature gauge .................................
(3) Head light switch ..................................................
(4) Horn button ..........................................................
(5) Turn signal light switch .........................................
(6) Hourmeter / Tachometer ......................................
(7) Easy Checker (TM) ..............................................
(8) Fuel gauge ..........................................................
(9) Hazard light switch .............................................
(10) Key switch ..........................................................
(11) Engine stop knob ...............................................
20
25
19
20
20
25
24
24
20
11
11
B Foot and Hand Controls
ILLUSTRATED CONTENTS
(1) Clutch pedal .........................................................
(2) Parking brake pedal .............................................
(3) Range gear shift lever (Hi-Lo) ..............................
(4) PTO gear shift lever .............................................
(5) Operator's seat ....................................................
(6) Seat belt ...............................................................
(7) Cup holder ...........................................................
(8) Trailer socket .......................................................
(9) Hand throttle lever ................................................
(10) Brake pedal ........................................................
(11) Foot throttle ........................................................
(12) Main gear shift lever ...........................................
(13) 3-Point hitch lowering speed knob ......................
(14) Differential lock pedal .........................................
(15) Hydraulic control lever .......................................
(16) Front wheel drive lever .......................................
(17) Parking release lever ........................................
22
23
22
29
18
19
----23
21
23
--36
26
35
23
23
B Pedal Location Label

The label is located on the cover under seat.
(1) Clutch pedal

(2) Brake pedal (left)
(3) Brake pedal (right)
(4) Brake pedal lock
(5) Differential lock pedal
(6) Foot throttle
10
PRE-OPERATION CHECK
PRE-OPERATION CHECK
DAILY CHECK
To prevent trouble from occurring, it is important to know

the condition of the tractor well. Check it before starting.

A Be sure to check and service the tractor on a
level surface with the engine shut off and the
parking brake "ON" and implement lowered to
the ground.
Check item
- Walk around inspection
- Check engine oil level
- Check transmission oil level
- Check coolant level
- Clean grill and radiator screen
- Check air cleaner evacuator valve
(When used in a dusty place)
- Check brake and clutch pedal
- Check parking brake
- Check indicators, gauges and meter
- Check lights
- Check wire harness
- Check seat belt and ROPS (if equipped)
- Check movable parts
- Refuel
(See "DAILY CHECK" in "PERIODIC SERVICE"
section.)
- Care of pictorial safety labels
(See "PICTORIAL SAFETY LABELS" in "SAFE
OPERATION" section.)
OPERATING THE ENGINE
11

2. To release the parking brake, pull the parking release
lever.
A Read "Safe Operation" in the front of this
manual.
A Understand the pictorial safety labels located
on the tractor.
A To avoid the danger of exhaust fume
poisoning, do not operate the engine in a
closed building without proper ventilation.
A Never start engine while standing on ground.
Start engine only from operator's seat.
A Make it a rule to set all shift levers to the
"NEUTRAL" positions and to place PTO lever in
"NEUTRAL" position before starting the
engine.
(1) Parking release lever
A Do not use starting fluid or ether.

A To protect the battery and the starter, make sure that
the starter is not continuously turned for more than 30
seconds.
STARTING THE ENGINE

1.
(A) "PULL"
2. Make sure the engine stop knob is

pushed in.
Push in the engine stop knob if it is pulled out, or the
engine will not start.
Make sure the parking brake is set.
1. To set the parking brake:

(1) Interlock the brake pedals.
(2) Depress the brake pedals.
(3) Depress the parking brake pedal to Park.
(1) Engine stop knob
(1) Parking brake pedal
(A) "DEPRESS"
(A) "PUSH"
12
3. Place the PTO gear shift lever in

"NEUTRAL" position.
(1) PTO gear shift lever
(A) Rear PTO "2nd"

Mid PTO "ON"
(B) Rear PTO "1st"
Mid PTO "OFF"
(N) "NEUTRALPOSITION"
5. Place the hydraulic control lever in

"DOWN" position.
(1) Hydraulic control lever
(A) "DOWN"
6. Set the throttle lever to about 1/2 way.
A The PTO gear shift lever shifts to the (A) position only
when the PTO restricting plate is in "RELEASE"
position.
4. Place the main gear shift lever in

"NEUTRAL" position.
(1) Hand throttle lever
(1) Main gear shift lever
(N) "NEUTRAL POSITION"
"INCREASE"
"DECREASE"
7. Insert the key into the key switch and

turn it "ON".
13
8. Fully depress the clutch pedal, turn

the key to "PREHEAT" position and
hold it for about 2 to 3 seconds.
Temperature
Preheating Time
Over 0 C
2 to 3 sec.
0 to -5 C
5 sec.
-5 to -15 C
10 sec.
A Glow plug indicator (5) comes on while engine is being

preheated.
9.
(A) "OFF"
(B) "ON"
(C) "PREHEAT"
(D) "START"
C Check Easy Checker(TM) lamps:

1. When the key is turned "ON", lamps (3) (4) should
come on. If trouble should occur at any location while
the engine is running, the warning lamp corresponding
to that location comes on.
Turn the key to "START" position and

release when the engine starts.
A Because of the safety devices, the engine will not start

except when the PTO gear shift lever is placed in the
"OFF" position, the main gear shift lever is placed in
the "NEUTRAL" position, and the clutch pedal is
disengaged.
C Cold Weather Starting
When the ambient temperature is below -5
and the
engine is very cold. If the engine fails to start, turn off the
key for 30 seconds. Then repeat steps 8 and 9. To protect
the battery and the starter, make sure that the starter is
not continuously turned for more than 30 seconds.
BBlock Heater (Option)

A block heater is available as an option from your dealer.
It will assist you in starting your tractor when the ambient
temperature is below -15 .
(1) Easy checker(TM)
(2) Key switch
(3) Engine oil pressure
(4) Electrical charge
(5) Glow plug indicator
A Daily checks with the Easy Checker(TM) only are not

sufficient. Never fail to conduct physical daily checks
carefully by referring to Daily Check section.
(See "DAILY CHECK" in "PERIODIC SERVICE"
section)
10. Check to see that all the lamps on the

Easy Checker(TM) are "OFF".
If a lamp is still on, immediately stop the engine and
determine the cause.
11. Release the clutch pedal
14
STOPPING THE ENGINE

1. After slowing the engine to idle, turn the
key to "OFF".
2. Remove the key.
A The engine stops when the key switch is turned off.
If the engine does not stop, pull engine stop knob back
and hold it until the engine stops.
After the engine has stopped, be sure to push the stop
knob back in, or the engine will not start the next time.
BWarm-up Transmission Oil at Low

Ambient Temperatures
Hydraulic oil serves as transmission fluid. In cold weather,
the oil may be cold with increased viscosity. This can
cause delayed oil circulation or abnormally low hydraulic
pressure for some time after engine start-up. This in turn
can result in trouble in the hydraulic system. To prevent
the above, observe the following instructions:
Warm up the engine at about 50 % of rated rpm according
to the table below:
Ambient temperature
Warm-up time requirement
Above 0 C
At least 5 minutes
0 to -10 C
5 to 10 minutes
-10 to -20 C
10 to 15 minutes
Below -20 C
More than 15 minutes
A Do not operate the tractor under full load condition until

it is sufficiently warmed up.
(1) Engine stop knob
(A) Pull to "STOP"
WARMING UP
A Be sure to set the parking brake during warmup.
A Be sure to set all shift levers to the "NEUTRAL"
positions and to place PTO lever in "OFF"
position during warm-up.
For five minutes after engine start-up, allow engine to
warm up without applying any load, this is to allow oil to
reach every engine part. If load should be applied to the
engine without this warm-up period, trouble such as
seizure, breakage or premature wear may develop.
15
JUMP STARTING
A Battery gases can explode. Keep cigarettes,
sparks, and flames away from battery.
A If tractor battery is frozen, do not jump start
engine.
A Do not connect other end of negative (-) jumper
cable to negative (-) terminal of tractor battery.
When jump starting engine, follow the instructions below
to safely start the engine.
1. Bring helper vehicle with a battery of the same voltage
as disabled tractor within easy cable reach. "THE
VEHICLES MUST NOT TOUCH".
2. Engage the parking brakes of both vehicles and put
the shift levers in neutral. Shut both engines off.
3. Put on safety goggles and rubber gloves.
4. Ensure the vent caps are securely in place. (if
equipped)
5. Cover vent holes with damp rags. Do not allow the rag
to touch the battery terminals.
6. Attach the red clamp to the positive (red, (+) or pos.)
terminal of the dead battery and clamp the other end
of the same cable to the positive (red, (+) or pos.)
terminal of the helper battery.
7. Clamp the other cable to the negative (black, (-) or
neg.) terminal of the helper battery.
8. Clamp the other end to the engine block or frame of
the disabled tractor as far from the dead battery as
possible.
9. Start the helper vehicle and let its engine run for a few
moments. Start the disabled tractor.
10. Disconnect the jumper cables in the exact reverse
order of attachment. (Steps 8, 7 and 6).
11. Remove and discard the damp rags.
(1) Dead battery

(2) Lay a damp rag over the vent caps
(3) Jumper cables
(4) Helper battery
A This machine has a 12volt negative (-) ground starting

system.
A Use only same voltage for jump starting.
A Use of a higher voltage source on tractors electrical
system could result in severe damage to tractor's
electrical system.
Use only matching voltage source when "Jump
starting" a low or dead battery condition.
16
OPERATING THE TRACTOR

OPERATING NEW TRACTOR
How a new tractor is handled and maintained determines

the life of the tractor.
A new tractor just off the factory production line has been,
of course, tested, but the various parts are not
accustomed to each other, so care should be taken to
operate the tractor for the first 50 hours at a slower speed
and avoid excessive work or operation until the various
parts become "broken-in." The manner in which the
tractor is handled during the "breaking-in." period greatly
affects the life of your tractor. Therefore, to obtain the
maximum performance and the longest life of the tractor,
it is very important to properly break-in your tractor. In
handling a new tractor, the following precautions should
be observed.
BDo not Operate the Tractor at Full Speed

for the First 50 Hours
A Do not start quickly nor apply the brakes suddenly.
A In winter, operate the tractor after fully warming up the
engine.
A Do not run the engine at speeds faster than
necessary.
A On rough roads, slow down to suitable speeds.
Do not operate the tractor at fast speed.
The above precautions are not limited only to new
tractors, but to all tractors. But it should be especially
observed in the case of new tractors.
BOARDING AND LEAVING THE TRACTOR
1. Never try to get on or off a moving tractor or jump off

the tractor to exit.
2. Face the tractor when getting into or out of the tractor.
Do not use the controls as hand holds to prevent
inadvertent machine movements.
3. Always keep steps and floor clean to avoid slippery
conditions.
OPERATING FOLDABLE ROPS (OPTION)

A When raising or folding the ROPS, apply
parking brake, stop the engine and remove the
key.
Always perform function from a stable position
at the rear of tractor.
A Fold the ROPS down only when absolutely
necessary and fold it up and lock it again as
soon as possible.
A Before proceeding to fold ROPS, check for any
possible
interference
with
installed
implements and attachments.
If interference occurs, contact your KUBOTA
Dealer.
BTo Fold the ROPS

1. Remove both set pins.
BChanging Lubricating Oil for New Tractors

The lubricating oil is especially important in the case of a
new tractor. The various parts are not "broken-in" and are
not accustomed to each other; small metal grit may
develop during the operation of the tractor; and this may
wear out or damage the parts. Therefore, care should be
taken to change the lubricating oil a little earlier than
would ordinarily be required.
For further details of change interval hours, see
"MAINTENANCE" section.
(1) Set pin

(2) Hair pin
17
2. Fold the ROPS.
BTo Raise the ROPS to Upright Position

1. Remove both hair pins and set pins.
A Hold the ROPS tightly with both hands and fold
the ROPS slowly and carefully.
(1) Set pin

(2) Hair pin
2. Raise ROPS to the upright position.

(1) ROPS
3. Insert both set pins and secure them with the hair pins.

A Make sure that both set pins are properly
installed and secured with the hair pins.

A Raise the ROPS slowly and carefully.
3. Insert both set pins and secure them with the hair pins.

A Make sure that both set pins are properly
installed as soon as the ROPS is in the upright
position and secured with the hair pins.
(1) Set pin

(2) Hair pin
(1) Set pin

(2) Hair pin
18
STARTING
A After adjusting the operator's seat, be sure to check to

see that the seat is properly locked.
1. Adjusting the operator's position.
[Type: KAB Seating XH2/P1]
A The seat and suspension should be adjusted to

ensure that the controls are comfortably at hand for the
operator, ensuring that the operator maintains a good
posture and minimizes risks from whole body
vibration.
BOperator's Seat

A Make sure that the seat is completely secured
after each adjustment.
A Do not allow any person other than the driver to
ride on the tractor.
[Type : COBO SC74/M91]
(1) Travel adjust lever
(2) Suspension adjuster
(3) Height adjust lever
(A) "RAISE"
(B) "LOWER"
(C) "INCREASE"
(D) "DECREASE"
C Travel adjustment
Pull the travel adjust lever and slide the seat backward or
forward, as required. The seat will lock in position when
the lever is released.

(2) Suspension adjust lever
(3) Height adjust knob
(4) Indication of height
(A) To decrease tension

(B) To increase tension
(0) Highest position
(I) Lowest position
(II) Second position
(III) Third position
C Travel adjustment
C Suspension adjustment
Turn the suspension adjust lever to achieve the optimum
suspension setting.
C Height adjustment
Pull and slide the height adjust knob to desired position
while sitting in the seat.
To increase tension, with the "+" (plus) sign on the handle
facing forward as shown, and cranking the ratchet handle.
To decrease tension, pull the grip out and rotate half a turn
until the "-" (minus) sign is facing forward as shown, and
cranking the ratchet handle.
The ratchet action is now reversed.
C Height adjustment
Pull and slide the height adjust lever to desired position
while sitting in the seat.
19
[Type : SEARS 607]
BSeat Belt

A Always use the seat belt when the ROPS is
installed.
A Do not use the seat belt if a foldable ROPS is
down or there is no ROPS.
Adjust the seat belt for proper fit and connect to the
buckle. The seat belt is auto-locking retractable type.

(2) Suspension adjust knob
(3) Height adjust knob
(4) Indication of suspension
(A) To decrease tension

(B) To increase tension
(C) "RAISE"
(D) "LOWER"
C Travel adjustment
Turn the suspension adjust knob to achieve the optimum
suspension setting.
C Height adjustment
Turn the height adjust knob to desired position while
sitting in the seat.
(1) Seat belt
2. Selecting light switch positions.

BHead Light Switch
Turn the light switch clockwise, and the following lights are
activated on the switch position.
(1) Head light switch
20
Light name
Switch position
(A)
(B)
Head light (Low beam)
OFF
ON
Tail light
OFF
ON
Number plate light
OFF
ON
Front position light
OFF
ON
A Position (light) indicator will be on when head light

switch is in "ON" position.
BTurn Signal / Hazard Light Switch

C Turn Signal Light Switch
To indicate a right turn, turn the turn signal light switch
clockwise. To indicate a left turn, turn the turn signal light
switch counter-clockwise. The corresponding right and
left turn signal lights and indicator on the instrument panel
will flash. Turn signal is active when key switch is in the
"ON" position.
A When you operate the turn signal light switch with the
trailer power connector connected, trailer indicators in
the instrumental panel start flashing.
A Be sure to return switch to center position after turning.
A When any one of turn signal light bulbs is burnt out,
turn signal lights flash faster.
(1) Turn signal light switch

(2) Hazard light switch
(3) Hazard / Turn signal indicator
(4) Trailer indicator
(5) Position indicator
A The indicator in the hazard light switch will light up

when the head light switch is turned on.
BHorn Button
The horn will sound when the key switch is in the "ON"
position and the horn button pressed.
C Hazard Light Switch

When hazard light switch is pushed, the hazard lights
flash along with the indicator on the instrument panel.
Press the hazard light switch again to turn off the light.
The hazard light switch is operative, even when the key
switch is at "OFF" position.
(1) Horn button
(A) "PUSH"
BTractor Lights
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Head light
Front turn signal / Hazard light
Tail light
Rear turn signal / Hazard light
Brake stop light
Number plate light
21
3. Checking the brake pedal.

BBrake Pedals (Right and Left)

A Applying only one rear wheel brake at high
speeds could cause the tractor to swerve or
roll-over.

A An accident may occur if the tractor is
suddenly braked, such as by heavy towed
loads shifting forward or loss of control.
A The braking characteristics are different
between two and four wheel drive. Be aware of
the difference and use carefully.
A When driving on icy, wet or loose surfaces,
make sure the tractor is correctly ballasted to
avoid skidding and loss of steering control.
Operate at reduced speed.
1. Before operating the tractor on the road or before
applying the parking brake, be sure to interlock the
right and left pedals as illustrated below.
2. Use individual brakes to assist in making sharp turns
at slow speeds (Field Operation Only). Disengage the
brake pedal lock and depress only one brake pedal.
3. Be sure brake pedals have equal adjustment when
using locked together.
(1) Brake pedal lock
(A) "LOCK"
(B) "RELEASE"
22
A Select proper gear and engine speed depending

on the type of job.
4. Raise the implement.

(See "HYDRAULIC UNIT" section)
6.
Selecting the Travel Speed.
BMain Gear Shift Lever & Range Gear Shift

Lever (L-H)
The main gear shift lever pattern is in the form of an "H".
The range gear shift lever moves in the form of an "I" in 2
stages, "HIGH" and "LOW". By combination of using the
main gear shift lever and the range gear shift lever, 6
forward speeds and 2 reverse speeds are obtained.
(A) "UP"
5. Depress the Clutch Pedal.

BClutch Pedal

A Sudden release of the clutch may cause the
tractor to lunge in an unexpected manner.
The clutch is disengaged when the clutch pedal is fully
pressed down.

(2) Range gear shift lever (Hi-Lo)
(A) "HIGH"
(B) "LOW"
(N) "NEUTRAL POSITION"
A To change speeds, press the clutch pedal completely

down and stop the tractor before attempting to
proceed with speed change.
A When you stand up from the seat with the main gear
shift lever at engaged, the engine will stop regardless
of whether the machine is moving or not.
This is because the tractor is equipped with Operator
Presence Control system (OPC).
(1) Clutch pedal
To help prevent premature clutch wear:

A The clutch pedal must be quickly disengaged and
be slowly engaged.
A Avoid operating the tractor with your foot resting on
the clutch pedal.
23
7. Accelerate the Engine.
BFront Wheel Drive Lever

A Do not engage the front wheel drive when
traveling at road speed.
A When driving on icy, wet or loose surfaces,
make sure the tractor is correctly ballasted to
avoid skidding and loss of steering control.
Operate at reduced speed and engage front
wheel drive.
A An accident may occur if the tractor is
suddenly braked, such as by heavy towed
loads shifting forward or loss of control.
A The braking characteristics are different
between two and four wheel drive. Be aware of
the difference and use carefully.
BHand Throttle Lever

Pulling the throttle lever back increases engine speed,
and pushing it forward decreases engine speed.
BFoot Throttle
Use the foot throttle when traveling on the road. Press
down on it for higher speed. The foot throttle is interlocked
with the hand throttle lever; when using the foot throttle,
keep the hand throttle lever in low idling position.
Use the lever to engage the front wheels with the tractor
stopped. Shift the lever to "ON" to engage the front wheel
drive.
(1) Hand Throttle lever

(2) Foot Throttle
(A) "INCREASE"
(B) "DECREASE"
8. Unlock the parking brake and slowly

release the clutch.
(1) Front wheel drive lever
"ON"
"OFF"
BParking Brake
A Depress the clutch pedal before engaging the front
wheel drive lever.
A Tires will wear quickly if front wheel drive is engaged
on paved roads.
To release the parking brake, pull the parking release

lever.
C Front wheel drive is effective for the following

jobs:
1. When greater pulling force is needed, such as working
in a wet field, when pulling a trailer, or when working
with a front-end loader.
2. When working in sandy soil.
3. When working on a hard soil where a rotary tiller might
push the tractor forward.
4. Additional braking at reduced speeds.

(A) "PULL"
24
STOPPING
BStopping
1. Slow the engine down.
2. Step on the clutch and brake pedal.
3. After the tractor has stopped, disengage the PTO,
lower the implement to the ground, shift the
transmission to neutral, release the clutch pedal, and
set the parking brake.
CHECK DURING DRIVING

BImmediately Stop the Engine if:
A The engine suddenly slows down or accelerates.
A Unusual noises suddenly are heard.
A Exhaust fumes suddenly become very dark.
BEasy Checker (TM)

If the warning lamps of the Easy Checker(TM) come on
during operation, immediately stop the engine, and find
the cause as shown below.
Never operate the tractor while Easy Checker(TM) lamp
is on.
Electrical charge
If the alternator is not charging the battery, the
warning lamp in the Easy Checker(TM) will come
on.
If this should happen during operation, check the
electrical charging system or consult your local
KUBOTA Dealer.
A For checking and servicing of your tractor, consult
your local KUBOTA Dealer for instructions.
BFuel Gauge
When the key switch is on, the fuel gauge indicates the
fuel level.
Be careful not to empty the fuel tank. Otherwise air may
enter the fuel system.
Should this happen, the system should be bled. (See
"Bleeding Fuel System" in "SERVICE AS REQUIRED" in
"PERIODIC SERVICE" section)
(1) Fuel gauge

(1) Easy checker(TM)
Engine oil pressure

If the oil pressure in the engine goes below the
prescribed level, the warning lamp in the Easy
Checker(TM) will come on.
If this should happen during operation, and it does
not go off when the engine is accelerated to more
than 1000 rpm, check level of engine oil.
(See "Checking Engine Oil Level" in "DAILY
CHECK" in "PERIODIC SERVICE" section)
(A) "EMPTY"
(B) "FULL"
BCoolant Temperature Gauge

A Do not remove radiator cap until coolant
temperature is well below its boiling point.
Then loosen cap slightly to the stop to relieve
any pressure before removing cap completely.
BHourmeter / Tachometer
This meter gives readings for engine speed, PTO shaft
speed and the hours the tractor has been operated.
1. The tachometer indicates the engine speed and the
540 PTO shaft speed location on the dial.
2. The hourmeter indicates in five digits the hours the
tractor has been used; the last digit indicates 1/10 of
an hour.
1. With the key switch at "ON", this gauge indicates the

temperature of the coolant. "C" for "cold" and "H" for
"hot".
2. If the indicator reaches the "H" position (red zone),
engine coolant is overheated. Check the tractor by
referring to "TROUBLESHOOTING" section.
(1) Engine revolution

(2) Hours used
(1) Coolant temperature gauge
25
(A) PTO: 540 rpm
26
PARKING
OPERATING TECHNIQUES
BParking
BDifferential Lock

BEFORE DISMOUNTING TRACTOR
A ALWAYS SET PARKING BRAKE AND LOWER
ALL IMPLEMENTS TO THE GROUND.
Leaving transmission in gear with the engine
stopped will not prevent the tractor from
accidental rolling.
A STOP THE ENGINE AND REMOVE THE KEY.
1. When parking, be sure to set the parking brake.
To set the parking brake;
(1) Interlock the brake pedals.
(2) Depress the brake pedals.
(3) Depress the parking brake pedal to Park.
(A) "DEPRESS"
2. Before getting off the tractor, disengage the PTO,

lower all implements to the ground, place all control
levers in their neutral positions, set the parking brake,
stop the engine and remove the key.
3. If it is necessary to park on an incline, be sure to chock
the wheels to prevent accidental rolling of the
machine.
To avoid personal injury due to loss of steering

control:
A Do not operate the tractor at high speed with
differential lock engaged.
A Do not attempt to turn with the differential lock
engaged.
A Be sure to release the differential lock before
making a turn in field conditions.
If one of the rear wheels should slip, step on the
differential lock pedal. Both wheels will turn together, then
reduce slippage.
Differential lock is maintained only while the pedal is
depressed.
(1) Differential lock pedal
(A) Press to "ENGAGE"

(B) Release to "DISENGAGE"
A When using the differential lock, always slow the

engine down.
A To prevent damage to power train, do not engage
differential lock when one wheel is spinning and the
other is completely stopped.
A If the differential lock cannot be released in the above
manner, step lightly on the brake pedals alternately.
BOperating the Tractor on a Road

A To help assure straight line stops when driving
at transport speeds, lock the brake pedals
together. Uneven braking at road speeds could
cause the tractor to roll-over.
A When traveling on road with 3-point hitch

mounted implement attached, be sure to have
sufficient front weight on the tractor to
maintain steering ability.
Observe all local traffic and safety regulations.
Use the Number plate.
27
BTransport the Tractor Safely

1. The tractor, if damaged, must be carried on a truck.
Secure the tractor tightly with ropes.
2. Follow the instruction below when towing the tractor:
Otherwise, the tractors powertrain may get damaged.
A Set the all shift levers to "NEUTRAL" position.
A If possible, start engine and select 2WD, if creep
speed is fitted ensure that it is disengaged.
A Tow the tractor using its front hitch or drawbar.
A Never tow faster than "10 km/h (6.2 mph)".
BDirections for Use of Power Steering
(1) Number plate
BOperating on Slopes or Rough Terrain

A Always back up when going up a steep slope.
Driving forward could cause the tractor to tip
over backward. Stay off hills and slopes too
steep for safe operation.
A Avoid changing gears when climbing or
descending a slope.
A If operating on a slope, never disengage shift
levers to neutral. Doing so could cause loss of
control.
A Do not drive the tractor close to the edges of
ditches or banks which may collapse under the
weight of the tractor. Especially when the
ground is loose or wet.
1. Be sure wheel tread is adjusted to provide proper
stability.
(See "WHEEL ADJUSTMENT" in "TIRES, WHEELS
AMD BALLAST" section.)
2. Slow down for slopes, rough ground, or sharp turns,
especially when transporting heavy, rear mounted
equipment.
3. Before descending a slope, shift to a gear low enough
to control speed without using brakes.
[S Type]
1. Power steering is activated only while the engine is
running. While the engine is stopped, the tractor
functions in the same manner as tractors without
power steering.
2. When the steering wheel is turned all the way to the
stop, the relief valve is activated. Do not hold the
steering wheel in this position for a long period of time.
3. Avoid turning the steering wheel while the tractor is
stopped, or tires may wear out sooner.
4. The power steering mechanism makes the steering
easier. Be careful when driving on a road at high
speeds.
BTrailer Electrical Outlet

A trailer electrical outlet is supplied for use with trailer or
implement.
(1) Trailer electrical outlet
28
C Function of each terminals in trailer electrical

outlet
Terminal
(1)
Function
Turn signal (LH)
(2)
Color of wire harness

Pink
(3)
Ground
Black
(4)
Turn signal (RH)
Red / White
(5)
Tail (RH)
Yellow / Red
(6)
Brake Stop
Green
(7)
Tail (LH)
Yellow
PTO
29
PTO
PTO OPERATION
A To prevent damage to PTO driven equipment
and possibly causing personal injury, use the
2nd rear PTO speed and mid-PTO speed only
when these higher rpms are specifically
recommended by the implement manufacturer.
A Replace restricting plate to (C) position after use of the

2nd PTO speed.
A To avoid shock loads to the PTO, reduce engine
speed when engaging the PTO, then open the throttle
to the recommended speed.
A To avoid damage of transmission, before shifting the
PTO gear shift lever, fully disengage the main clutch.
C Mid PTO (if equipped)
The mid PTO is available for KUBOTA approved
implements.

A Disengage PTO, stop engine, and allow all
rotating components to come to a complete
stop before connecting, disconnecting,
adjusting, or cleaning any PTO driven
equipment.
BPTO Gear Shift lever

The tractor has two rear PTO speeds and one mid PTO
speed.
1st-
Rear: 540
rpm
2nd- Rear: 1000 rpm

Mid:
(1) Mid PTO
2500 rpm
To shift into 2nd PTO speed, loosen the bolt and turn the
restricting plate to (D) position. Then retighten the bolt.
C Rear PTO speed

Model
Engine Speed rpm
PTO Speed rpm
B1620D
B1820D
B1820DS
2773
540
2722
1000
Shaft
6-Spline
C Mid PTO speed

Model
B1620D
B1820D
B1820DS

(2) Restricting plate
(3) Bolt
(A) 1st (Rear: 540 rpm)

(B) 2nd (Rear: 1000 rpm)
(Mid: 2500 rpm)
(C) Restricted position
(original position)
(D) Released position
Engine Speed rpm Mid-PTO Speed rpm
2750
2500
Shaft
10-Spline
USA
No.5
A There is a PTO-1 (540rpm) indicator mark on the

tachometer face. Be sure to check before operating.
A Tractor engine will not start if PTO gear shift lever is in
the engaged ("ON") position.
30
PTO
BPTO shaft Cover and Shaft Cap
BStationary PTO
Keep the PTO shaft cover in place at all times. Replace

the PTO shaft cap when the PTO is not in use. Before
connecting or disconnecting a drive shaft to PTO shaft, be
sure engine is "OFF".
[without Mid PTO type]

To park the tractor and use the PTO system (for chipper
or pump, for example), start the PTO system in the
following steps.
1. Apply the parking brake and place blocks at the tires.
2. Make sure the shift levers are at NEUTRAL, and start
the engine.
3. Set the PTO gear shift lever to "Rear PTO ON"
position.
4. Set the engine speed to provide recommended rear
PTO speed.
5. Get off the tractor.
(1) PTO shaft cover

(2) PTO shaft cap
A The universal joint of the PTO drive shaft is technically

limited in its moving angle. Refer to the PTO Drive
Shaft Instructions for proper use.

(2) Clutch pedal
(A) "DEPRESS"
"ON (540 rpm)"

"NEUTRAL"
"ON (1000 rpm)"
A If the PTO system is engaged and you stand up from

the seat and release the parking brake, the engine
stops automatically after standing up.
PTO
[with Mid PTO type]

To park the tractor and use the PTO system (for chipper
or pump, for example), start the PTO system in the
following steps.
1. Apply the parking brake and place blocks at the tires.
2. Make sure the shift levers are at NEUTRAL, and start
the engine.
3. Set the PTO gear shift lever to "Rear PTO 1st"
position.
4. Set the engine speed to provide recommended rear
PTO speed.
5. Get off the tractor.

(2) Clutch pedal
(A) "DEPRESS"
Rear PTO "1st"

Mid PTO "OFF"
"NEUTRAL"
A If the PTO system is engaged and you stand up from

the seat and release the parking brake, the engine
stops automatically after standing up.
31
32
THREE-POINT HITCH & DRAWBAR
(1) Top link

(2) Lifting rod (Left)
(3) Check chain
(4) Turn buckle
(5) Lower link
(6) Lifting rod (Right)
(7) Drawbar (if equipped)
3-POINT HITCH
33
BDrawbar(if equipped)
1. Make preparations for attaching

implement.
Remove the drawbar if a close mounted implement is

being attached.
2. Attaching and detaching implements

BSelecting the holes of lifting rods and
lower links
There are two holes in the lower links. For most
operations the lifting rods should be attached to the (B)
holes.

A Be sure to stop the engine and remove the key.
A Do not stand between tractor and implement
unless parking brake is applied.
A Before attaching or detaching implement,
locate the tractor and implement on a firm, flat
and level surface.
A Whenever an implement or other attachment is
connected to the tractor 3-point hitch, check
full range of operation for interference, binding
or PTO driveline separation.
BLifting Rod (Right)
(1) Lower links

(2) Lifting rods
holes:(A),(B)
Level a 3-point mounted implement from side to side by

turning the adjusting handle to shorten or lengthen the
adjustable lifting rod with the implement on the ground.
After adjustment, tighten the lock nut securely.
A The lifting rods may be attached to (A) hole for higher

lifting height. (with reduced lifting force)
BSelecting the Top Link Mounting Holes

Select the proper set of holes by referring to the
"Hydraulic Control Unit Use Reference Chart" in
"HYDRAULIC UNIT" section.
(1) Adjusting handle

(2) Lock nut
BTop Link
1. Adjust the angle of the implement to the desired
position by shortening or lengthening the top link.
2. The proper length of the top link varies according to
the type of implement being used.
(1) Top link
(2) Mounting hole
34
BCheck Chains
Adjust the turnbuckle to control horizontal sway of the
implement.
After adjustment, retighten the lock nut.
DRAWBAR (if equipped)

A Never pull from the top link, the rear axle or any
point above the drawbar. Doing so could cause
the tractor to tip over rearward causing
personal injury or death.
(1) Turnbuckle
(2) Lock nut
(1) Drawbar
FRONT HITCH (if equipped)
(1) Front hitch
HYDRAULIC UNIT
35
HYDRAULIC UNIT
3-POINT HITCH CONTROL SYSTEM
A Before using the 3-point hitch controls, ensure
that no person or object is in the area of the
implement or 3-point hitch. Do not stand on or
near the implement or between the implement
and tractor when operating the 3-point hitch
controls.
A Do not operate until the engine is warmed up. If

operation is attempted when the engine is still cold, the
hydraulic system may be damaged.
A If noises are heard when implement is lifting after the
hydraulic control lever has been activated, the
hydraulic mechanism is not adjusted properly.
Unless corrected, the unit will be damaged.
Contact your KUBOTA Dealer for adjustment.
BImplement Lowering Limit

The implement lowering limit can be changed by shifting
the locker (A).
BHydraulic Control
Operating the hydraulic control lever actuates the
hydraulic lift arm, which controls the height of 3-point hitch
mounted implement.
To lower implement, push the lever forward; to raise it, pull
the lever back. After setting the implement to the desired
height, move the lever back to "NEUTRAL" position.
(A) "DOWN"
(N) "NEUTRAL"
(B) "UP"
A If the 3-point hitch can not be raised by setting the

hydraulic control lever to the UP position after long
term storage or when changing the transmission oil,
follow these air bleeding procedures.
1. Stop the engine.
2. Set the hydraulic control lever to the down position,
fully depress and hold the clutch pedal, start the
engine.
3. Operate the engine at low idle speed and continue
to depress the clutch pedal for at least 30 seconds
to bleed air from the system.
(1) Interlock rod

(2) Locker (A)
Lower Limit
The lower limit can be changed by adjusting the
position of locker (A). Shifting the locker (A) forward
raises the lower limit and shifting it backward lowers
the lower limit.
36
HYDRAULIC UNIT
B3-point Hitch Lowering Speed

A Fast lowering speed may cause damage or
injury. Lowering speed of implement should be
adjusted to two or more seconds.
The lowering speed of the 3-point hitch can be controlled
by adjusting the 3-point hitch lowering speed knob.
(1) 3-Point hitch lowering speed knob
AUXILIARY HYDRAULICS
Hydraulic outlet is provided on the tractor.
BHydraulic Block Type Outlet

Hydraulic block type outlet is useful when adding
hydraulically operated equipment such as front end
loader, front blade, etc.
When implement is attached
1. Remove the block cover.
2. Attach the block outlet cover. (option)
(A) "FAST"
(B) "SLOW"
(C) "LOCK"
(1) Block cover

(2) Block outlet cover (option)
(3) Outlet
(4) Inlet
(5) Hydraulic block
(A) From gear pump

(B) To implement inlet
Max. flow
15.1 L/min
No relief valve in the
hydraulic block.
(C) From implement outlet
A For hydraulic block type outlet, be sure to use the

control valve of the "Power beyond type" with relief
valve that has a third line return to tank for the
operation of hydraulic block.
HYDRAULIC UNIT
BRear outlet

A Stop the engine and place the hydraulic control
lever of 3-point hitch at the "neutral" position
before changing the oil flow.
When a hydraulically operated implement is connected to
the tractor, the oil flow to 3P hitch can be switched to the
cylinder on the implement by means of the lever on the
hydraulic outlet.
When implement is attached
1. Remove the plug (3) (screw: PF1/2) and restricting
bolt (1).
2. When the lever is positioned at (A), the oil flows into
the cylinder of tractor (3P hitch operation).
When the lever is turned to the position (B), the oil
flows into the cylinder on the implement.
(1) Restricting bolt
(2) Lever
(3) Plug (PF1/2)
A When implement is not attached, be sure the lever is

turned back to (A) position and restricting bolt is
installed.
A Don't place the lever at the half-way, other than (A)
and (B) positions. Or it may cause the technical
problem on the machine.
37
38
HYDRAULIC UNIT
BHydraulic Control Unit Use Reference Chart

In order to handle the hydraulics properly, the operator must be familiar with the following. Though this information may not
be applicable to types of implements and soil conditions, it is useful for general conditions.
Implement
Remarks
Top link
Soil condition mounting holes
(1)Hydraulic
control lever
Gauge
Wheel
(1)Check
chains
Light soil
Moldboard plow
Adjust the check

chains so that the
implement can
move 5 to 6cm
laterally.
Medium soil
heavy soil
Disc plow
---
Harrower (spike,
springtooth, disc
type)
---
Sub-soiler....
Earthmover,
digger, scraper,
manure fork, rear
carrier....
---
Loose
For implements
with gauge wheels,
lower the
implements to the
ground.
(1) is standard.
(2) is used only
when there is
some obstacle
that prevents you
from using the
standard.
Weeder ridger..
Mower (mid-and
rear-mount type),
hayrake,
tedder....
YES/NO
Hydraulic control
YES
YES/NO
Tighten
Check chains
should be tight
enough to prevent
excessive
implement
movement when
implement is in
raised position.
For implements
with gauge wheels,
lower the
implements to the
ground.
TIRES, WHEELS AND BALLAST
39

TIRES
WHEEL ADJUSTMENT

A Do not attempt to mount a tire on a rim. This
should be done by a qualified person with the
proper equipment.
A Always maintain the correct tire pressure.
Do not inflate tires above the recommended
pressure shown in the operator's manual.
A Do not use tires other than those approved by
KUBOTA.
BInflation Pressure
Though the tire pressure is factory-set to the prescribed
level, it naturally drops slowly over the course of time.
Thus, check it regularly and inflate as necessary.
Tire sizes
Rear
Inflation Pressure
7-16, 4PR
180 kPa (1.8 kgf/cm )
8-16, 4PR
160 kPa (1.6 kgf/cm )
9.5-16, 4PR
140 kPa (1.4 kgf/cm )
212/80D-15, 4PR
160 kPa (1.6 kgf/cm )
29 x 12.00-15, 4PR
140 kPa (1.4 kgf/cm )
4.50-10, 4PR
220 kPa (2.2 kgf/cm )
5-12, 4PR
240 kPa (2.2 kgf/cm )
Front 6-12B, 4PR
200 kPa (2.0 kgf/cm )
20 x 8.00-10, 4PR
160 kPa (1.6 kgf/cm )
20.5 x 8.00-10, 4PR
160 kPa (1.6 kgf/cm )
A Maintain the maximum recommended pressure in the

front tires, when using a front loader or equipped with
a full load of front weights.
BDual Tires
Dual tires are not approved.

A When working on slopes or when working with
trailer, set the wheel tread as wide as practical
for maximum stability.
A Support tractor securely on stands before
removing a wheel.
A Do not work under any hydraulically supported
devices. They can settle, suddenly leak down,
or be accidentally lowered. If necessary to work
under tractor or any machine elements for
servicing or adjustment, securely support them
with stands or suitable blocking beforehand.
A Never operate tractor with a loose rim, wheel,
or axle.
A Whenever an implement or other attachment is
connected to the tractor 3-point hitch, check
full range of operation for interference to tires.
40
BFront Wheels
Tire
Front tread width can not be adjusted.

A Do not turn front discs to obtain wider tread.
A When re-fitting or adjusting a wheel, tighten the bolts
to the following torques then recheck after driving the
tractor 200 m (200 yards) and 10 times of shuttle
movement by 5 m (5 yards), and thereafter according
to service interval. (See "MAINTENANCE" section.)
4.5 - 10
Farm
5 - 12
Farm
(1) 79 to 92 N-m (8.1 to 9.4 kgf-m)

A Before jacking up the tractor, park it on a firm
and level ground and chock the rear wheels.
A Fix the front axle to keep it from swinging.
A Select jacks that withstand the machine weight
and set them up as shown below.
6 - 12B
Farm
20 x
8.00 -10
Turf
20.5 x
8.00 -10
Turf
(1) Jack point
Tread
41
BRear Wheels
Rear tread width can be adjusted as shown with the standard equipped tires.
To change the tread width
1. Loosen the nut of cotter pin bolt.
3. Change the tread to the desired position.
2. Remove the snap pin and wheel hub pin.
4. Re-set the wheel hub pin, snap pin and cotter pin bolt.
Tire
7-16 Farm
857 mm to
1035 mm
8-16 Farm
935 mm to
1035 mm
9.5-16 Farm
969 mm to
1069 mm
212/80D-15 Turf
935 mm to
1035 mm
29 x 12.00-15 Turf
985 mm
Tread
A Always attach tires as shown in the drawings.

A If not attached as illustrated, transmission parts may be damaged.
A When re-fitting or adjusting a wheel, tighten the bolts to the following torques then recheck after driving the tractor
200 m (200 yards) and 10 times of shuttle movement by 5 m (5 yards), and thereafter according to service interval.
(See "MAINTENANCE" section.)
(1) Nut
(2) Spring washer
(3) Bolt
(4) Wheel hub pin
(5) Snap pin
(6) Hub
(A) 123 to 147N-m

(12.6 to 15.0 kgf-m)
(B) 108 to 125 N-m
(11.0 to 12.8 kgf-m)
(1) Cotter (A)

(2) Cotter (B)
(3) Nut
(4) Spring washer

(5) Hub
(6) Bolt
A Insert the bolt from the indented side of the cotter (A)
as shown.
42
BALLAST
A Before jacking up the tractor, park it on a firm
and level ground and chock the front wheels.
A Fix the front axle to keep it from swinging.
A Select jacks that withstand the machine weight
and set them up as shown below.

A Additional ballast will be needed for
transporting heavy implements. When the
implement is raised, drive slowly over rough
ground, regardless of how much ballast is
used.
A Do not fill the front wheels with liquid.
BFront Ballast
Add weights if needed for stability and improving traction.
Heavy pulling and heavy rear mounted implements tend
to lift front wheels. Add enough ballast to maintain
steering control and prevent tip over.
Remove weight when no longer needed.
(1) Jack point
C Front End Weights (option)

The front end weights can be attached to the bumper.
See your implement operator's manual for required
number of weights or consult your local KUBOTA Dealer
to use.
A Besides the weight, a mounting kit is also required.
(1) Front end weights

(2) Bumper
A Do not overload tires.

A Add no more weight than indicated in chart.
Maximum weight
25 kg x 3 pieces
BMaximum Masses
BRear Ballast
(See "APPENDICES" section.)
Add weight to rear wheels if needed to improve traction or

for stability. The amount of rear ballast should be matched
to job and the ballast should be removed when it is not
needed.
The weight should be added to the tractor in the form of
liquid ballast.
C Liquid Ballast in Rear Tires
Water and calcium chloride solution provides safe
economical ballast. Used properly, it will not damage tires,
tubes or rims. The addition of calcium chloride is
recommended to prevent the water from freezing. Use of
this method of weighting the wheels has the full approval
of the tire companies. See your tire dealer for this service.
Liquid weight per tire (75 Percent filled)
Tire sizes
7 - 16
8 - 16
9.5 - 16
Slush free at -10

Solid at -30
[Approx. 1 kg CaCl per 4L
of water]
25 kg
35 kg
54 kg
Slush free at -24

Solid at -47
[Approx. 1.5 kg CaCl per
4L of water]
27 kg
37 kg
57 kg
Slush free at -47

Solid at -52
[Approx. 2.25 kg CaCl per
4L of water]
29 kg
39 kg
60 kg
A Do not fill tires with water or solution more than 75% of

full capacity (to the level of valve stem at 12 o'clock
position).
(1) Air
(2) Water
(A) Correct : 75% Full

Air compresses like a cushion
(B) Incorrect : 100% Full
Water can not be compressed
43
44
MAINTENANCE
MAINTENANCE
SERVICE INTERVALS
No.
Indication on hour meter
Since then
Ref.
page
Change
every 200 Hr
49
Items
50
100
150
200
250
300
350
400
450
500
550
600
650
700
Engine oil
Engine oil filter
Replace
every 200 Hr
60
Hydraulic oil filter
Replace
every 400 Hr
61
Transmission fluid
Change
every 400 Hr
61
Front axle case oil
Change
every 400 Hr
62
Greasing
---
every 50 Hr
52
Engine start system
Check
every 50 Hr
53
Wheel bolt torque
Check
every 50 Hr
54
Battery condition
Check
every 100 Hr
54
*5
10
Air cleaner element

[Single Type]
Clean
every 100 Hr
55
*1
Replace
every 1 year
63
*2
Clean
every 100 Hr
56
*1
11
Air
cleaner
element
[Double
Type]
Replace
every 1 year
63
*2
Replace
every 1 year
63
Check
every 100 Hr
56
Primary
element
Secondary
element
12
Fuel filter element
Replace
every 400 Hr
62
13
Fan belt
Adjust
every 100 Hr
57
14
Clutch
Adjust
every 100 Hr
58
15
Brake
Adjust
every 100 Hr
58
16
Parking brake
Adjust
every 100 Hr
59
17
Radiator hose and

clamp
Check
every 200 Hr
60
Replace
every 2 years
65
Check
every 100 Hr
59
Replace
every 2 years
65
Check
every 200 Hr
61
Replace
every 2 years
65
18
Fuel line
*4
*4
19
Intake air line
20
Engine valve
clearance
Adjust
every 800 Hr
63
*4
21
Fuel injection nozzle

Injection pressure
Check
every 1500
Hr
63
*4
22
Injection pump
Check
every 3000
Hr
63
*4
23
Cooling system
Flush
every 2 years
63
24
Coolant
Change
every 2 years
63
25
Fuel system
Bleed
26
Clutch housing water
Drain
27
Fuse
Replace
28
Light bulb
Replace
65
Service as
required
65
66
66
*4
MAINTENANCE
45
A The jobs indicated by

must be done after the first 50 hours of operation.
*1 Air cleaner should be cleaned more often in server dusty conditions.
*2 Every year or after 6 cleanings.
*3 Replace only if necessary.
*4 Consult your local KUBOTA Dealer for this service.
*5 When the battery is used for less than 100 hours per year, check the fluid level annually.
LUBRICANTS,FUEL AND COOLANT

No.
Locations
Capacities
Lubricants
Fuel
14 L
No. 2-D diesel fuel

No. 1-D diesel fuel if temperature is below -10
Coolant
(with recovery tank)
3.4 L
Fresh clean soft water with anti-freeze

Engine oil : CF or better (Refer to next page)
Engine crankcase
(with filter)
2.4 L
Above 25
SAE30, SAE10W-30
or 15W-40
0 to 25
SAE20, SAE10W-30
or 15W-40
Below 0
SAE10W, SAE10W-30
or 15W-40
Transmission case
10.5 L
KUBOTA UDT or SUPER UDT fluid*
Front axle case
3.4 L
KUBOTA UDT or SUPER UDT fluid* or

SAE 80 - SAE90 gear oil
Greasing
No. of greasing points
Clutch pedal
Brake pedal
Top link
Lifting rod (RH)
Parking brake
Battery terminal
Capacity
Until grease overflow.
1
1
2
Type of grease
Multipurpose Grease
NLGI-2 OR NLGI-1
(GC-LB)
Moderate amount
NOTE: *KUBOTA SUPER UDT fluid--- KUBOTA original transmission hydraulic fluid
46
MAINTENANCE
C Engine Oil:
A Oil used in the engine should have an American Petroleum Institute (API) service classification and Proper SAE
Engine Oil according to the ambient temperatures as shown above:
A With the emission control now in effect, the CF-4 and CG-4 lubricating oils have been developed for use of a lowsulfur fuel on on-road vehicle engines. When an off-road vehicle engine runs on a high-sulfur fuel, it is advisable to
employ the "CF or better" lubricating oil with a high Total Base Number (TBN of 10 minimum).
A Refer to the following table for the suitable API classification engine oil according to the engine type (with internal
EGR, external EGR or non-EGR) and the fuel (low-sulfur or high-sulfur fuel).
Fuel used
High Sulfur Fuel

[ 0.05% (500 ppm)]
Engine oil classification (API classification)

Oil class of engines except external EGR
Oil class of engines with external EGR
CF
(If the "CF-4, CG-4, CH-4 or CI-4" lubricating oil is
used with a high-sulfur fuel, change the lubricating
oil at shorter intervals. (approximately half))
---
Low Sulfur Fuel

[<0.05% (500 ppm)] or
CF, CF-4, CG-4, CH-4 or CI-4
Ultra Low Sulfur Fuel
[<0.0015% (15 ppm)]
CF or CI-4
(Class CF-4, CG-4 and CH-4 engine oils
cannot be used on EGR type engines)
EGR: Exhaust Gas Re-circulation

A The CJ-4 engine oil is intended for DPF (Diesel Particulate Filter) type engines, and cannot be used on this tractor.
Model
without EGR
with external EGR
B1620, B1820
---
C Fuel:
A Cetane number of 45 minimum. Cetane number greater than 50 is preferred, especially for temperatures below
-20
or elevations above 1500 m.
A If diesel fuel with sulfur content greater than 0.5% (5000 ppm) sulfur content is used, reduce the service interval for
engine oil and filter by 50%.
A NEVER use diesel fuel with sulfur content greater than 0.05% (500 ppm) for EXTERNAL EGR type engine.
A DO NOT use diesel fuel with sulfur content greater than 1.0% (10000 ppm).
A Diesel fuels specified to EN 590 or ASTM D975 are recommended.
A No.2-D is a distillate fuel of lower volatility for engines in industrial and heavy mobile service. (SAE J313 JUN87)
A Since this engine adopts EPA Tier 4 and Interim Tier 4 standards, the use of low sulfur fuel or ultra low sulfur fuel is
mandatory in EPA regulated area (North America). Therefore, please use No.2-D S500 or S15 diesel fuel as an
alternative to No.2-D, or use No.1-D S500 or S15 diesel fuel as an alternative to No.1-D if outside air temperature
is below -10 .
C Transmission Oil:
The oil used to lubricate the transmission is also used as hydraulic fluid. To insure proper operation of the hydraulic
system and to complete lubrication of the transmission, it is important that a multi-grade transmission fluid is used in
this system. We recommend the use of KUBOTA UDT or SUPER UDT fluid for optimum protection and performance.
(Consult your local KUBOTA Dealer for further detail.)
Do not mix different brands together.
A Indicated capacities of water and oil are manufacturer's estimate.
PERIODIC SERVICE
47
PERIODIC SERVICE
A Do not work under any hydraulically supported
devices. They can settle, suddenly leak down,
or be accidentally lowered. If necessary to work
under tractor or any machine elements for
servicing or adjustment, securely support them
with stands or suitable blocking beforehand.
HOW TO OPEN THE HOOD

To avoid personal injury from contact with moving
parts;
A Never open the hood or engine side cover while
the engine is running.
A Do not touch muffler or exhaust pipes while
they are hot; Severe burns could result.
A Support hood with other hand while unlocking
support link.
(1) Support rod
(A) "HOLD"
(B) "PULL"
BFront Grille
To remove the front grill, pull outward as indicated by
arrows, and then lift the front grill off.
To open the hood, twist the mascot to release the latch

and open the hood.
1. Pulling up the cover catches (1), tilt down the front

grille forward and take it away.
2. To reattach the front grille, fit it to the notches and take
reverse order.
(1) Mascot
(2) Hood
(1) Cover catch

(2) Notch
BHood
(A) "OPEN"
A To close the hood, hold the hood and release the

support rod.
(A) "PULL UP TO REMOVE"
48
PERIODIC SERVICE
DAILY CHECK
BEngine Side Cover

1. Tilt down the front grille forward.
2. Lift up the front of the engine side cover and free the
upper and lower projections.
For your own safety and maximum service life of the

machine, make a thorough daily inspection before
operating the machine to start the engine.

Take the following precautions when checking the
tractor.
A Park the machine on firm and level ground.
A Set the parking brake.
A Lower the implement to the ground.
A All residual pressure of the hydraulic system
released.
A Stop the engine and remove the key.
BWalk Around Inspection

Look around and under the tractor for such items as loose
bolts, trash build-up, oil or coolant leaks, broken or worn
parts.
(1) Engine side cover

(2) Projection
(A) "LIFT UP TO REMOVE"
3. Pull the engine side cover forward and free the rear
notches. Now the side cover can be detached.
(1) Engine side cover

(2) Notch
PERIODIC SERVICE
BChecking and Refueling
49
BChecking Engine Oil Level

A Do not smoke while refueling.
A Be sure to stop the engine before refueling.
1. Turn the key switch to "ON", check the amount of fuel
by fuel gauge.
2. Fill fuel tank when fuel gauge shows 1/4 or less fuel in
tank.
3. Use grade No.2-Diesel fuel at temperatures above
-10 .
Use grade No.1-Diesel fuel at temperatures below
-10 .

A Be sure to stop the engine before checking the
oil level.
1. Park the machine on a flat surface.
2. Check engine oil before starting the engine or 5
minutes or more after the engine has stopped.
3. To check the oil level, draw out the dipstick, wipe it
clean, replace it, and draw it out again. Check to see
that the oil level lies between the two notches.
If the level is too low, add new oil to the prescribed
level at the oil inlet.
(See "LUBRICANTS" in "MAINTENANCE" section.)
(1) Fuel tank cap

(1) Oil inlet
(2) Dipstick
Fuel tank capacity
(A) Oil level is acceptable within this range.
14 L
A Do not permit dirt or trash to get into the fuel system.

A Be careful not to let the fuel tank become empty,
otherwise air will enter the fuel system, necessitating
bleeding before next engine start.
A Be careful not to spill during refueling. If should spill,
wipe it off at once, or it may cause a fire.
A To prevent condensation (water) accumulation in the
fuel tank, fill the tank before parking overnight.
A When using an oil of different maker or viscosity from

the previous one, remove all of the old oil.
Never mix two different types of oil.
A If oil level is low, do not run engine.
50
PERIODIC SERVICE
BChecking Transmission Fluid Level

1. Park the machine on a flat surface, lower the
implement and shut off engine.
2. To check the oil level, draw out the dipstick, wipe it
clean, replace it, and draw it out again. Check to see
that the oil level lies between the two notches.
If the level is too low, add new oil to the prescribed
level at the oil inlet.
BChecking Coolant Level

A Do not remove radiator cap while coolant is
hot. When cool, slowly rotate cap to the first
stop and allow sufficient time for excess
pressure to escape before removing the cap
completely.
1. Check to see that the coolant level is between the
"FULL" and "LOW" marks of recovery tank.
2. When the coolant level drops due to evaporation, add
soft water only up to the full level.
In case of leakage, add anti-freeze and soft water in
the specified mixing ratio up to the full level.
(See "Flushing Cooling System and Changing
Coolant" in "EVERY 2 YEARS" in "PERIODIC
SERVICE" section.)
(1) Dipstick
(1) Recovery tank
(1) Oil inlet
A If oil level is low, do not run engine.
(A) "FULL"
(B) "LOW"
A If the radiator cap has to be removed, follow the

caution above and securely retighten the cap.
A Use clean, fresh soft water and anti-freeze to fill the
recovery tank.
A If coolant should leak, consult your local KUBOTA
Dealer.
PERIODIC SERVICE
BCleaning Grill and Radiator Screen

A Be sure to stop the engine and remove the key
before removing the screen.
1. Check front grill and side screens to be sure they are
clean of debris.
2. Detach the screen and remove all foreign materials
and clean the front of radiator completely.
51
BChecking Parking Brake

A Stop the engine and chock the wheels before
checking parking brake pedal.
Proper parking brake

pedal free travel
1 notch (Ratchet sound 1).
1. Check free travel of the parking brake pedal.

(See "Adjusting Parking Brake" in "EVERY 100
HOURS" in "PERIODIC SERVICE" section.)
(1) Radiator screen
(A) "DETACH"
A Grill and screen must be clean from debris to prevent

engine from overheating and to allow good air intake
for the air cleaner.
A If the dust or chaff has accumulated between the
battery and radiator, open the shutter plate and clean
the front of radiator completely.
BChecking Brake Pedals and Clutch Pedal

1. Inspect the brake and clutch pedals for free travel, and
smooth operation.
2. Adjust if incorrect measurement is found:
(See "Adjusting Clutch Pedal" and "Adjusting Brake
Pedal" in "EVERY 100 HOURS" in "PERIODIC
SERVICE" section.)
A Brake pedals should be equal when depressed.

(A) "PULL"
BChecking Gauges, Meter and Easy

Checker(TM)
1. Inspect the instrument panel for broken gauge(s),
meter(s) and Easy Checker(TM).
2. Replace if broken.
BChecking Head Light, Hazard Light etc.

1. Inspect the lights for broken bulbs and lenses.
2. Replace if broken.
BChecking Seat Belt and ROPS (if

equipped)
1. Always check condition of seat belt and ROPS
attaching hardware before operating tractor.
2. Replace if damaged.
52
PERIODIC SERVICE
BChecking and Cleaning of Electrical

Wiring and Battery Cables

A A loosened terminal or connector, or damaged
wire may affect the performance of electrical
components or cause short circuits. Leakage
of electricity could result in a fire hazard, a
dead battery or damage to electrical
components.
A Replace damaged wires or connections
promptly.
A If a fuse blows soon after replacement, DO NOT
USE A LARGER THAN RECOMMENDED FUSE
OR BYPASS THE FUSE SYSTEM.
A Many wiring connections are protected by
waterproof plugs, plug and unplug these
connections carefully and make sure they are
sealed correctly after assembly.
A Accumulation of dust, chaff or spilled fuel
deposits around the battery, electrical wiring,
engine or exhaust system are a fire hazard.
CLEAN THESE AREAS BEFORE STARTING
WORK.
To avoid premature electrical malfunctions DO
NOT APPLY high pressure water directly to
battery,
wiring,
connectors,
electrical
components or instrument panel.
Inspect the following Regularly:
1. Check wiring for chafed or cracked insulation.
2. Check wiring harness clamps. Replace if necessary.
3. Check connectors and terminals for looseness,
contamination
or
overheated
(discolored)
connections.
4. Check instrument panel for correct operation of
switches and gauges.
Consult your Kubota Dealer regarding maintenance,
diagnosis and repair.
EVERY 50 HOURS
BLubricating Grease Fittings
Apply a small amount of multipurpose grease to the
following points every 50 hours:
If you operated the machine in extremely wet and muddy
conditions, lubricate grease fittings more often.
(1) Battery terminals
(1) Grease fitting (Brake pedal)
BChecking Movable Parts

If any of the movable parts, such as levers and pedals, is
not smoothly moved because of rust or anything sticky, do
not attempt to force it into motion.
In the above case, remove the rust or the sticky thing, and
apply oil or grease on the relevant spot.
Otherwise, the machine may get damaged.
(1) Grease fitting (Clutch pedal)

(2) Grease fitting (Pedal shaft)
PERIODIC SERVICE
53
BChecking Engine Start System

A Do not allow anyone near the tractor while
testing.
A If the tractor does not pass the test do not
operate the tractor.
(1) Grease fitting (Top link)

(2) Grease fitting (Lifting rod, right)
C
1.
2.
3.
4.
5.
Preparation before testing.

Sit on operator's seat.
Set the parking brake and stop the engine.
Shift the main gear shift lever in "NEUTRAL" position.
Shift the PTO gear shift lever to "NEUTRAL" position.
Fully depress the clutch pedal.
C
1.
2.
3.
4.
Test : Switch for the main gear shift lever.

Shift the main gear shift lever to "Desired" position.
Turn the key to "START" position.
The engine must not crank.
Test : Switch for the PTO gear shift lever.

Shift the main gear shift lever to "NEUTRAL" position.
Shift the PTO gear shift lever to "ON" (Engaged)
position.
4. Turn the key to "START" position.
5. The engine must not crank.
C
1.
2.
3.
(1) Grease fitting (Parking brake)
C
1.
2.
3.
4.
5.
6.
7.
8.
Test : Switch for the Operator's seat.

Sit on operator's seat.
Start the engine.
Shift the PTO gear shift lever to "ON" (Engaged)
position.
Release the parking brake.
Stand up. (Do not get off the tractor.)
The engine must shut off after approximately 1
second.
If it does not stop, consult your local KUBOTA Dealer
for this service.
A If the engine cranks during any of these tests, consult

your local KUBOTA Dealer to have unit checked
before operating.
(1) Parking brake
(A) Greasing
54
PERIODIC SERVICE
(1) Clutch pedal

(4) Parking brake
(5) Seat
(1) 123 to 147 N-m (12.6 to 15.0 kgf-m)

(2) 108 to 125 N-m (11.0 to 12.8 kgf-m)
EVERY 100 HOURS

BChecking Battery Condition
BChecking Wheel Bolt Torque

A Never operate tractor with a loose rim, wheel,
or axle.
A Any time bolts and nuts are loosened, retighten
to specified torque.
A Check all bolts and nuts frequently and keep
them tight.
Check wheel bolts and nuts regularly especially when
new. If they are loose, tighten them as follows.
To avoid the possibility of battery explosion:

For the refillable type battery, follow the
instructions below.
A Do not use or charge the refillable type battery
if the fluid level is below the LOWER (lower limit
level) mark. Otherwise, the battery component
parts may prematurely deteriorate, which may
shorten the battery's service life or cause an
explosion. Check the fluid level regularly and
add distilled water as required so that the fluid
level is between the UPPER and LOWER levels.

A Never remove the battery cap while the engine
is running.
A Keep electrolyte away from eyes, hands and
clothes. If you are spattered with it, wash it
away completely with water immediately and
get medical attention.
A Keep open sparks and flames away from the
battery at all times. Hydrogen gas mixed with
oxygen becomes very explosive.
A Wear eye protection and rubber gloves when
working around battery.
(1) Nut: 77 to 90 N-m (7.9 to 9.2 kgf-m)
The factory-installed battery is of non-refillable

type. If the indicator turns white, do not charge the
battery but replace it with new one.
PERIODIC SERVICE
55
Mishandling the battery shortens the service life and adds

to maintenance costs.
The original battery is maintenance free, but needs some
servicing.
If the battery is weak, the engine will be difficult to start
and the lights will be dim. It is important to check the
battery periodically.
(1) Battery
(1) Battery
(2) Indicator
C How to read the indicator

Check the battery condition by reading the indicator.
State of indicator display
Green
Specific gravity of electrolyte and quality of

electrolyte are both in good condition.
Black
Needs charging battery.
White
Needs replacing battery.
C Battery Charging

A When the battery is being activated, hydrogen
and oxygen gases in the battery are extremely
explosive. Keep open sparks and flames away
from the battery at all times, especially when
charging the battery.
A When charging the battery, ensure the vent
caps are securely in place. (if equipped)
A When disconnecting the cable from the battery,
start with the negative terminal first.
When connecting the cable to the battery, start
with the positive terminal first.
A Never check battery charge by placing a metal
object across the posts.
Use a voltmeter or hydrometer.
1. To slow charge the battery, connect the battery

positive terminal to the charger positive terminal and
the negative to the negative, then recharge in the
standard fashion.
2. A boost charge is only for emergencies. It will partially
charge the battery at a high rate and in a short time.
When using a boost-charged battery, it is necessary to
recharge the battery as early as possible.
Failure to do this will shorten the battery's service life.
3. The battery is charged if the indicator display turns
green from black.
4. When exchanging an old battery for a new one, use
battery of equal specification shown in table 1.
[TABLE 1]
Battery
Type
Volts
(V)
Capacity
at
5H.R
(A.H)
Reserve
at
(min)
Cold
Cranking
Amps
Normal
Charging
Rate(A)
50B24L(S)MF
12
32
70
400
4.0
C Direction for Storage

1. When storing the tractor for a long period, remove the
battery from tractor, adjust the electrolyte to the proper
level and store in a dry place out of direct sunlight.
2. The battery self-discharges while it is stored.
Recharge it once every three months in hot seasons
and once every six months in cold seasons.
BCleaning Air Cleaner Element [Single

Element Type]
1. Remove the element.
2. Clean the element:
(1) When dry dust adheres to the element, blow
compressed air from the inside, turning the
element. Pressure of compressed air must be
under 205 kPa (2.1 kgf/cm , 30 psi).
56
PERIODIC SERVICE
(2) When carbon or oil adheres to the element, soak

the element in detergent for 15 minutes then wash
it several times in water, rinse with clean water
and dry it naturally. After element is fully dried,
inspect inside of the element with a light and
check if it is damaged or not. (referring to the
instructions on the label attached to the case.)
3. Replace air cleaner element:
Once yearly or after every sixth cleaning, whichever
comes first.
A Check to see if the evacuator valve is blocked with
dust.
(1) Elements
(2) Cover
(3) Evacuator valve
A The air cleaner uses a dry element, never apply oil.

A Do not run the engine with filter element removed.
A Be sure to refit the cover with the arrow
(on the
rear) upright. If the cover is improperly fitted, dust
passed by the baffle and directly adheres to the
element.
C Evacuator Valve
Open the evacuator valve once a week under ordinary
conditions - or daily when used in a dusty place - to get rid
of large particles of dust and dirt.
BCleaning Air Cleaner Primary Element

[Double Element Type](if equipped)
1. Remove the air cleaner cover and primary element.
2. Clean the primary element:
(1) When dry dust adheres to the element, blow
compressed air from the inside, turning the
element. Pressure of compressed air must be
under 205kPa (2.1kgf/cm , 30 psi).
(2) When carbon or oil adheres to the element, soak

the element in detergent for 15 minutes then wash
it several times in water, rinse with clean water
and dry it naturally. After element is fully dried,
inspect inside of the element with a light and
check if it is damaged or not.
3. Replace air cleaner primary element:
Once yearly or after every sixth cleaning, whichever
comes first.
A Check to see if the evacuator valve is blocked with
dust.
(1) Secondary (safety) element

(2) Primary element
(3) Cover
(4) Evacuator valve
A The air cleaner uses a dry element, never apply oil.

A Do not run the engine with filter element removed.
A Be sure to refit the cover with the arrow
(on the
cover) upright. If the cover is improperly fitted,
evacuator valve will not function and dust will adhere
to the element.
A Do not touch the secondary element except in cases
where replacing is required.
(See "Replacing Air Cleaner Primary Element and
Secondary Element" in "EVERY 1 YEAR" in
"PERIODIC SERVICE" section.)
C Evacuator Valve
Open the evacuator valve once a week under ordinary
conditions - or daily when used in a dusty place - to get rid
of large particles of dust and dirt.
BCleaning Fuel Filter

This job should not be done in the field, but in a clean
place.
1. Loosen and remove the filter bowl, and rinse the inside
with kerosene.
2. Take out the element and dip it in the kerosene to
rinse.
PERIODIC SERVICE
3. After cleaning, reassemble the fuel filter, keeping out

dust and dirt.
4. Bleed the fuel system.
(See "SERVICE AS REQUIRED" in "PERIODIC
SERVICE" section.)
A When the fuel filter bowl has been removed, fuel stops
flowing from the fuel tank. If the fuel tank is almost full,
however, the fuel will flow back from the fuel return
pipe to the fuel filter. Before checking, make sure the
fuel tank is less than half-full.
57
BAdjusting Fan Belt Tension

A Be sure to stop the engine before checking belt
tension.
Proper fan belt
tension
A deflection of between 7 to 9 mm
when the belt is pressed in the
middle of the span.
1. Stop the engine and remove the key.

2. Apply moderate thumb pressure to belt between
pulleys.
3. If tension is incorrect, loosen the alternator mounting
bolts and, using a lever placed between the alternator
and the engine block, pull the alternator out until the
deflection of the belt falls within acceptable limits.
4. Replace fan belt if it is damaged.
(1) Fuel filter bowl
(A) "LOOSEN"
(B) "TIGHTEN"
(1) Bolt
(1) O ring
(2) Filter element
(3) Filter bowl
A If dust, dirt or water enters the fuel system, the fuel

pump and injection nozzles are subject to premature
wear. To prevent this, be sure to clean the fuel filter
bowl and element periodically.
(A) Check the belt tension

(B) To tighten
58
PERIODIC SERVICE
BAdjusting Clutch Pedal

Proper clutch pedal
free travel
15 to 25 mm on the pedal
1. Stop the engine and remove the key.

2. Slightly depress the clutch pedal and measure free
travel at top of pedal stroke.
3. If adjustment is needed, loosen the lock nut and turn
the turnbuckle to adjust the rod length within
acceptable limits.
4. Retighten the lock nut.
BAdjusting Brake Pedal

checking brake pedal.
Proper brake pedal

free travel
30 to 40 mm on the pedal
Keep the free travel in the right
and left brake pedals equal.
1. Slightly depress the brake pedals and measure free

travel at the top of pedal stroke.
2. If adjustment is needed, loosen the lock nut and adjust
the rod length.
(1) Lock nut

(2) Turnbuckle
(A) "FREE TRAVEL"
(A) "FREE TRAVEL"
(1) Brake lever

(2) Adjust nut
(3) Lock nut
PERIODIC SERVICE
BAdjusting Parking Brake

checking parking brake pedal.
Proper parking brake

pedal free travel
59
BChecking Fuel Line

1. Check to see that all lines and hose clamps are tight
and not damaged.
2. If hoses and clamps are found worn or damaged,
replace or repair them at once.
1 notch (Ratchet sound 1).
1. Check free travel of the parking brake pedal.

2. If adjustment is needed, pull the parking release lever
to release the parking brake, and then loosen the lock
nut and the adjust nut.
3. Adjust the adjust nut to leave no space between the
collar and the brake lever.
(1) Fuel lines
(2) Clamp bands
A If the fuel line is removed, be sure to properly bleed the

fuel system.
(See "Bleeding Fuel System" in "SERVICE AS
REQUIRED" in "PERIODIC SERVICE" section. )

(1) Brake lever

(2) Adjust nut
(3) Lock nut
(A) "PULL"
60
PERIODIC SERVICE
EVERY 200 HOURS

BReplacing Engine Oil Filter
2. After draining reinstall the drain plug.

3. Fill with the new oil up to the upper notch on the
dipstick.
Oil capacity with filter
2.4 L

A Be sure to stop the engine before changing the
oil filter cartridge.
A Allow engine to cool down sufficiently, oil can
be hot and can burn.
1. Remove the oil filter.
2. Put a film of clean engine oil on the rubber seal of the
new filter.
3. Tighten the filter quickly until it contacts the mounting
surface.
Tighten filter by hand an additional 1/2 turn only.
4. After the new filter has been replaced, the engine oil
normally decreases a little. Make sure that the engine
oil does not leak through the seal and be sure to check
the oil level on the dipstick. Then, replenish the engine
oil up to the prescribed level.
5. Properly dispose of used oil.
(1) Oil inlet

(2) Dipstick
(A) Oil level is acceptable within this range
(1) Engine oil filter

(1) Drain plug
A To prevent serious damage to the engine, use only a

KUBOTA genuine filter.
BChanging Engine oil

oil.
1. To drain the used oil, remove the drain plug at the
bottom of the engine and drain the oil completely into
the oil pan.
All the used oil can be drained out easily when the
engine is still warm.
BChecking Radiator Hose and Clamp

Check to see if radiator hoses are properly fixed every 200
hours of operation or six months, whichever comes first.
1. If hose clamps are loose or water leaks, tighten bands
securely.
2. Replace hoses and tighten hose clamps securely, if
radiator hoses are swollen, hardened or cracked.
Replace hoses and hose clamps every 2 years or earlier
if checked and found that hoses are swollen, hardened or
cracked.
PERIODIC SERVICE
61
EVERY 400 HOURS

BChanging Transmission Fluid/Replacing
Hydraulic Oil Filter

oil filter cartridge.
(1) Radiator hoses (3 hoses)

(2) Clamp bands (7 clamps)
1. To drain the used oil, remove the drain plug at the

bottom of the transmission case and drain the oil
completely into the oil pan.
2. After draining reinstall the drain plug.
C Precaution at Overheating
Take the following actions in the event the coolant
temperature is nearly or more than the boiling point, what
is called "Overheating"
1. Park the tractor in a safe place and keep the engine
unloaded idling.
2. Don't stop the engine suddenly, but stop it after about
5 minutes of unloaded idling.
3. Keep yourself well away from the machine for further
10 minutes or while the steam blows out.
4. Check that there are no dangers such as burns. Get rid
of the causes of overheating according to the manual,
see "TROUBLESHOOTING" section, and then, start
again the engine.
BChecking Intake Air Line

1. Check to see that hoses and hose clamps are tight and
not damaged.
2. If hoses and clamps are found worn or damaged,
replace or repair them at once.
(1) Drain plug

(2) Drain plugs (Both sides)
(1) Hose
(2) Hose clamps
62
PERIODIC SERVICE
3. Remove the oil filter.
(1) Oil inlet

(1) Hydraulic oil filter
4. Put a film of clean transmission oil on rubber seal of

new filter.
5. Tighten the filter quickly until it contacts the mounting
surface.
Tighten filter by hand an additional 1/2 turn only.
6. Fill with new KUBOTA SUPER UDT fluid up to the
upper notch on the dipstick.
(See "LUBRICANTS" in "MAINTENANCE" section
and "Checking Transmission Fluid Level" in "DAILY
CHECK" in "PERIODIC SERVICE" section.)
Oil capacity
10.5 L
7. After running the engine for a few minutes, stop it and

check the oil level again; add oil to prescribed level.
8. After the new filter has been replaced, the
transmission fluid level will decrease a little. Make sure
that the transmission fluid does not leak through the
seal, and check the fluid level.
Top off if necessary.
A To prevent serious damage to the hydraulic system,
use only a KUBOTA genuine filter.
A If the 3-point hitch can not be raised by setting the
hydraulic control lever to the UP position after long
term storage or when changing the transmission oil,
turn steering wheel to the right and left several times
to bleed air from the system.
A Do not operate the tractor immediately after changing
the transmission fluid.
Run the engine at medium speed for a few minutes to
prevent damage to the transmission.
BReplacing Fuel Filter Element

(See "Cleaning Fuel Filter" in "EVERY 100 HOURS" in
"PERIODIC SERVICE" section.)
(1) Dipstick
BChanging Front Axle Case Oil

1. Park the tractor on a firm, flat and level surface.
2. To drain the used oil, remove the right and left drain
plugs and filling plug at the front axle case and drain
the oil completely into the oil pan.
3. After draining, reinstall the drain plugs.
4. Fill with new oil up to the upper notch on the dipstick.
A After ten minutes, check the oil level again; add oil to
prescribed level.
5. After filling, reinstall the filling plug.
PERIODIC SERVICE
EVERY 2 YEARS

Oil capacity
63
3.4 L
BFlushing Cooling System and Changing

Coolant

A Do not remove radiator cap while coolant is
hot. When cool, slowly rotate cap to the first
stop and allow sufficient time for excess
pressure to escape before removing the cap
completely.
(1) Filling plug with dipstick

(2) Drain plug
(A) Oil level is acceptable

within this range
EVERY 800 HOURS

BAdjusting Engine Valve Clearance
Consult your local KUBOTA Dealer for this service.
EVERY 1500 HOURS

BChecking Fuel Injection Nozzle Injection
Pressure
EVERY 3000 HOURS

BChecking Injection Pump
EVERY 1 YEAR
BReplacing Air Cleaner Element
(See "Cleaning Air Cleaner Element [Single Element
Type]" in "EVERY 100 HOURS" in "PERIODIC SERVICE"
section.)
BReplacing Air Cleaner Primary Element

and Secondary Element
(See "Cleaning Air Cleaner Primary Element" in "EVERY
100 HOURS" in "PERIODIC SERVICE" section.)
A To prevent serious damage to the engine, use only a
KUBOTA genuine filter.
1. Stop the engine, remove the key and let it cool down.
2. To drain the coolant, open the radiator drain cock, and
remove radiator cap. The radiator cap must be
removed to completely drain the coolant.
3. After all coolant is drained, close the drain cock.
4. Fill with clean soft water and cooling system cleaner.
5. Follow directions of the cleaner instruction.
6. After flushing, fill with clean soft water and anti-freeze
until the coolant level is just below the radiator cap.
Install the radiator cap securely.
7. Fill with coolant up to the "FULL" mark of recovery
tank.
8. Start and operate the engine for few minutes.
9. Stop the engine, remove the key and let cool.
10. Check coolant level of recovery tank and add coolant
if necessary.
11. Properly dispose of used coolant.
Coolant capacity
(with recovery tank)
3.4 L
64
PERIODIC SERVICE
1. Long-life coolant (hereafter LLC) comes in several

types. Use ethylene glycol (EG) type for this engine.
2. Before employing LLC-mixed cooling water, fill the
radiator with fresh water and empty it again.
Repeat this procedure 2 or 3 times to clean up the
inside.
3. Mixing the LLC
Put the LLC in cooling water in the percentage (%) for
a target temperature. When mixing, stir it up well, and
then fill into the radiator.
4. The procedure for the mixing of water and antifreeze
differs according to the make of the antifreeze and the
ambient temperature. Refer to SAE J1034 standard,
more specifically also to SAE J814c.
(1) Radiator cap
(2) Recovery tank
(3) Drain cock
(A) "FULL"
(B) "LOW"
A Do not start engine without coolant.

A Use clean, fresh soft water and anti-freeze to fill the
radiator and recovery tank.
A When mixing the anti-freeze with water, the anti-freeze
mixing ratio is 50%.
A Securely tighten radiator cap. If the cap is loose or
improperly fitted, water may leak out and the engine
could overheat.
BAnti-Freeze

A When using antifreeze, put on some protection
such as rubber gloves (Antifreeze contains
poison.).
A If should drink antifreeze, throw up at once and
take medical attention.
A When antifreeze comes in contact with the skin
or clothing, wash it off immediately.
A Do not mix different types of Antifreeze.
The mixture can produce chemical reaction
causing harmful substances.
A Antifreeze is extremely flammable and
explosive under certain conditions. Keep fire
and children away from antifreeze.
A When draining fluids from the engine, place
some container underneath the engine body.
A Do not pour waste onto the grounds, down a
drain, or into any water source.
A Also, observe the relevant environmental
protection regulations when disposing of
antifreeze.
If it freezes, coolant can damage the cylinders and
radiator. If the ambient temperature falls below 0
or
before a long-term storage, let out cooling water
completely, or mix fresh water with long-life coolant and fill
the radiator and recovery tank with the mixture.
A When the antifreeze is mixed with water, the

antifreeze mixing ratio must be less than 50%.
Vol %
Anti-freeze
Freezing Point
Boiling Point*
40
50
-24
-37
106
108
D At 1.013 x 10 Pa (760mmHg) pressure (atmospheric).

A higher boiling point is obtained by using a radiator
pressure cap which permits the development of
pressure within the cooling system.
5. Adding the LLC
(1) Add only water if the mixture reduces in amount
by evaporation.
(2) If there is a mixture leak, add the LLC of the same
manufacturer and type in the same mixture
percentage.
D Never add any long-life coolant of different
manufacturer. (Different brands may have
different additive components, and the engine
may fail to perform as specified.)
6. When the LLC is mixed, do not employ any radiator
cleaning agent. The LLC contains anticorrosive agent.
If mixed with the cleaning agent, sludge may build up,
adversely affecting the engine parts.
7. Kubota's genuine long-life coolant has a service life of
2 years. Be sure to change the coolant every 2 years.
A The above data represent industry standards that
necessitate a minimum glycol content in the
concentrated antifreeze.
A When the coolant level drops due to evaporation, add
water only to keep the antifreeze mixing ratio less than
50%. In case of leakage, add antifreeze and water in
the specified mixing ratio before filling in to the
radiator.
PERIODIC SERVICE
BReplacing Radiator Hose (Water pipes)

Replace the hoses and clamps.
(See "Checking Radiator Hose and Clamp" in "EVERY
200 HOURS" in "PERIODIC SERVICE" section.)
BReplacing Fuel Lines

BReplacing Intake Air Line

65
SERVICE AS REQUIRED
BBleeding Fuel System
Air must be removed:
1. When the fuel filter or lines are removed.
2. When the tank is completely empty.
3. After the tractor has not been used for a long period of
time.
C Bleeding procedure is as follows:
1. Fill the fuel tank with fuel.
2. Start the engine and run for about 30 seconds, and
then stop the engine.
BDraining Clutch Housing Water

The tractor is equipped with a drain plug under the clutch
housing.
After operating in rain, snow or tractor has been washed,
water may get into the clutch housing.
Remove the drain plug and drain the water, then install the
plug again.
(1) Water drain plug
66
PERIODIC SERVICE
C Protected circuit
BReplacing Fuse
The tractor electrical system is protected from potential
damage by fuses.
A blown fuse indicates that there is an overload or short
somewhere in the electrical system.
If any of the fuses should blow, replace with a new one of
the same capacity.
A Before replacing a blown fuse, determine why the fuse

blew and make any necessary repairs. Failure to
follow this procedure may result in serious damage to
the tractor electrical system. Refer to the
"TROUBLESHOOTING" section of this manual or your
local KUBOTA Dealer for specific information dealing
with electrical problems.
FUSE
No.
CAPACITY
(A)
(1)
15 A
Key stop
(2)
15 A
Hazard
(3)
20 A
Head light, Horn, Key stop
(4)
10 A
Brake
(5)
15 A
Auxiliary (Reserve)
(6)
10 A
Instrument cluster
(7)
Protected circuit
Slow blow fuse Check circuit against wrong battery

50 A
connection
BReplacing Light Bulb

1. Head lights.
Take the bulb out of the light body and replace with a
new one.
2. Other lights
Detach the lens and replace the bulb.
Light
Capacity
Head light
H8 - 35 W
Tail light / Brake stop light
5 W / 21 W
Turn signal / hazard light
21 W
Instrument panel light
1.7 W
Hazard light switch indicator
0.6 W
Work light
---
5W
Number plate light
5W
STORAGE
67
STORAGE
A Do not clean the machine while the engine is
running.
A To avoid the danger of exhaust fume
poisoning, do not operate the engine in a
closed building without proper ventilation.
A When storing, remove the key from the key
switch to avoid unauthorized persons from
operating the tractor and getting injured.
9. Remove the battery from the tractor. Store the battery

following the battery storage procedures.
(See "Battery" in "EVERY 100 HOURS" in "PERIODIC
SERVICE" section.)
10. Keep the tractor in a dry place where the tractor is
sheltered from the elements. Cover the tractor.
11. Store the tractor indoors in a dry area that is protected
from sunlight and excessive heat. If the tractor must be
stored outdoors, cover it with a waterproof tarpaulin.
Jack the tractor up and place blocks under the front
and rear axles so that all four tires are off the ground.
Keep the tires out of direct sunlight and extreme heat.
TRACTOR STORAGE
If you intend to store your tractor for an extended period

of time, follow the procedures outlined below.
These procedures will insure that the tractor is ready to
operate with minimum preparation when it is removed
from storage.
1. Check the bolts and nuts for looseness, and tighten if
necessary.
2. Apply grease to tractor areas where bare metal will
rust also to pivot areas.
3. Detach the weights from the tractor body.
4. Inflate the tires to a pressure a little higher than usual.
5. Change the engine oil and run the engine to circulate
oil throughout the engine block and internal moving
parts for about five minutes.
6. Pull the engine stop knob all the way out.
7. Keep the clutch disengaged. If the clutch is left
engaged for a long period of time, the clutch plate may
rust, making clutch disengagement impossible at the
next operation.
(1) Clutch pedal latch

(2) Clutch pedal
(A) "PULL"
(B) "DEPRESS"
(C) "LATCH"
8. With all implements lowered to the ground, coat any

exposed hydraulic cylinder piston rods with grease.
A When washing the tractor, be sure to stop the engine.

Allow sufficient time for the engine to cool before
washing.
A Cover the tractor after the muffler and the engine have
cooled down.
REMOVING THE TRACTOR FROM

STORAGE
1. Check the tire air pressure and inflate the tires if they
are low.
2. Jack the tractor up and remove the support blocks
from under the front and rear axles.
3. Install the battery. Before installing the battery, be sure
it is fully charged.
4. Check the fan belt tension.
5. Check all fluid levels (engine oil, transmission/
hydraulic oil, engine coolant and any attached
implements).
6. Start the engine. Observe all gauges. If all gauges are
functioning properly and reading normal, move the
tractor outside. Once outside, park the tractor and let
the engine idle for at least five minutes. Shut the
engine off and walk around tractor and make a visual
inspection looking for evidence of oil or water leaks.
7. With the engine fully warmed up, release the parking
brake and test the brakes for proper adjustment as you
move forward. Adjust the brakes as necessary.
8. Push the clutch pedal latch into the pedal shaft and fix
it during travel or operation.
68
TROUBLESHOOTING
TROUBLESHOOTING
ENGINE TROUBLESHOOTING
If something is wrong with the engine, refer to the table below for the cause and its corrective measure.
Trouble
Cause
Engine is difficult to start or

won't start.
Countermeasure
A No fuel flow.
A Check the fuel tank and the fuel filter.

Replace filter if necessary.
A Air or water is in the fuel system.
A Check to see if the fuel line coupler bolt and

nut are tight.
A Bleed the fuel system
(See "Bleeding Fuel System" in "SERVICE AS
REQUIRED" in "PERIODIC SERVICE"
section.)
A In winter, oil viscosity increases, A Use oils of different viscosities, depending on

and engine revolution is slow.
ambient temperatures.
A Use engine block heater. (Option)
A Battery becomes weak and the A Clean battery cables & terminals.
engine does not turn over quick A Charge the battery.
enough.
A In cold weather, always remove the battery
from the engine, charge and store it indoors.
Install it on the tractor only when the tractor is
going to be used.
A Insufficient or dirty fuel.
A The air cleaner is clogged.
A Check the fuel system.

A Clean or replace the element.
A Insufficient fuel.
A Refuel.
A Bleed the fuel system if necessary.
Black
A Fuel quality is poor.

A Too much oil.
A The air cleaner is clogged.
A Change the fuel and fuel filter.

A Check the proper amount of oil.
A Clean or replace the element.
Blue
white
A The inside of exhaust muffler is A Heat the muffler by applying load to the
dumped with fuel.
engine.
A Injection nozzle trouble.
A Check the injection nozzle.
A Fuel quality is poor.
A Change the fuel and fuel filter.
Insufficient engine power.

Engine stops suddenly.
Exhaust fumes are

colored.
A Engine overloaded
A Shift to lower gear or reduce load.
A Low coolant level
A Fill cooling system to the correct level;

check radiator and hoses for loose
connections or leaks.
A Loose or defective fan belt
A Adjust or replace fan belt.
Engine overheats
A Dirty radiator core or grille screens A Remove all trash.

A Coolant flow route corroded
If you have any questions, consult your local KUBOTA Dealer.
A Flush cooling system.
OPTIONS
OPTIONS
Consult your local KUBOTA Dealer for further detail.
A Front end weights
For front ballast
A Mounting Kit (Front end weights)
To mount Front end weights
A Drawbar
A Working Light
A Front Hitch
A Beacon Switch
A Rear ROPS
69
70
APPENDICES
APPENDICES
MAXIMUM MASSES
BMaximum Permissible Load of The Tire (Applicable Only in Running on The Public Road)
B6 (Without ROPS)
Tire combination 1.
kg
Tractor
payload
Front tire
Rear tire
Technically permissible
maximum laden weight
4.5-10
7-16
Maximum permissible load of the tire
205
485
Maximum axle load according to the tire specification
410
970
1300
736 - 750
Minimum limit percentages
25%
68%
Tire size
Tire combination 2.
kg
Front tire
Rear tire
Tractor
payload
Tire size
5-12
8-16
220
475
440
950
1300
724 - 738
27%
66%
Tire combination 3.
kg
Front tire
Rear tire
Tractor
payload
6-12B
9.5-16
290
595
580
1040(**)
1300
708 - 722
20%
55%
Tire size
Tire combination 4.
Tire size
kg
Front tire
Rear tire
Tractor
payload
20x8.00-10
212/80D-15
400
435
700(*)
870
1300
728 - 742
33%
46%
APPENDICES
Tire combination 5.
Tire size
71
kg
Front tire
Rear tire
Tractor
payload
205x8.00-10
29x12.00-15
410
680
700(*)
1040(**)
1300
722 - 736
20%
46%
*) Technically permissible weight of the front axle is 700kg no matter which the tire size.
**) 80% of the 1300kg which is the maximum permissible weight of the tractor.
B7 (With ROPS)
Tire combination 1.
kg
Front tire
Rear tire
Tractor
payload
4.5-10
7-16
205
485
410
970
1300
696 - 710
25%
68%
Tire size
Tire combination 2.
kg
Front tire
Rear tire
Tractor
payload
Tire size
5-12
8-16
220
475
440
950
1300
684 - 698
27%
66%
Tire combination 3.
kg
Front tire
Rear tire
Tractor
payload
6-12B
9.5-16
290
595
580
1040(**)
1300
670 - 684
20%
55%
Tire size
Tire combination 4.
Tire size
kg
Front tire
Rear tire
Tractor
payload
20x8.00-10
212/80D-15
400
435
700(*)
870
1300
688 - 702
33%
46%
72
APPENDICES
kg
Tire combination 5.
Tire size
Front tire
Rear tire
Tractor
payload
205x8.0010
29x12.0015
410
680
700(*)
1040(**)
1300
684 - 698
20%
46%
kg
Tire combination 6.
Tire size
Front tire
Rear tire
Tractor
payload
23x8.50-12
270/75-16
506
620
700(*)
1040(**)
1300
644 - 658
20%
46%
*) Technically permissible weight of the front axle is 700kg no matter which the tire size.
**) 80% of the 1300kg which is the maximum permissible weight of the tractor.
APPENDICES
73
BTrailer Load Capacity

B6 (Without ROPS)
Height above ground h [mm]
Distance from
the vertical
plane passing
through the
axis of the rear
axle
c [mm]
Maximum
static vertical
load /
technically
permissible
mass on the
coupling point
S [daN(kg)]
Front tire
4.50-10
5-12
6-12B
20x8.00-10
20.5x8.00-10
Rear tire
7-16
8-16
9.5-16
212/80D-15
29x12.00-15
Drawbar
(B2400)
354
378
411
344
372
326
375
Drawbar
(CUNA KB2)
354
378
411
344
372
326
375
Drawbar
(AL-KO AK
303 K)
639
662
696
628
657
384
335
B7 (With ROPS)
Maximum
static vertical
load /
technically
permissible
mass on the
coupling
point
S [daN(kg)]
Front tyre
4.50-10
5-12
6-12B
20x8.00-10
20.5x8.0010
23x8.50-12
Rear tyre
7-16
8-16
9.5-16
212/80D-15
29x12.0015
270/75-16
Distance
from the
vertical plane
passing
through the
axis of the
rear axle
c [mm]
Drawbar
(B2400)
354
378
411
344
372
382
326
355
Drawbar
(CUNA KB2)
354
378
411
344
372
382
326
355
Drawbar
(AL-KO AK
303 K)
639
662
696
628
657
667
384
140
Height above ground h [mm]
Drawbar (B2400), Drawbar (CUNA KB2), Drawbar (AL-KO AK 303 K)
(unit : kg)
Total technically
Permissible towable
permissible mass of
masses
the tractor-trailer
combination
Unbraked towable mass
1000
2300
Independently braked towable mass
2000
3300
Inertia-braked towable mass
2000
3300
Towable mass when fitted with

hydraulic or pneumatic braking
74
APPENDICES
INDEX
3-point Hitch Lowering Speed ........................36
Air Cleaner Element .......................................63
Air Cleaner Element [Single Element Type] ...55
Air Cleaner Primary Element
[Double Element Type](if equipped)...............56
Air Cleaner Primary Element
and Secondary Element .................................63
Anti-Freeze.....................................................64
Battery Condition............................................54
Bleeding Fuel System ....................................65
Block Heater (Option).....................................13
Brake Pedal....................................................58
Brake Pedals (Right and Left) ........................21
Brake Pedals and Clutch Pedal......................51
Check Chains .................................................34
Checking and Refueling .................................49
Clutch Housing Water ....................................65
Clutch Pedal ...................................................22
Clutch Pedal ...................................................58
Coolant Level .................................................50
Coolant Temperature Gauge..........................25
Cooling System and Coolant..........................63
Differential Lock..............................................26
Directions for Use of Power Steering .............27
Do not Operate the Tractor
at Full Speed for the First 50 Hours ...............16
Drawbar(if equipped)......................................33
Dual Tires .......................................................39
Easy Checker (TM) ........................................24
Electrical Wiring and Battery Cables ..............52
Engine oil........................................................60
Engine Oil Filter..............................................60
Engine Oil Level .............................................49
Engine Side Cover .........................................48
Engine Start System.......................................53
Engine Valve Clearance.................................63
Fan Belt Tension ............................................57
Foot Throttle ...................................................23
Front Axle Case Oil ........................................62
Front Ballast ...................................................42
Front Grille......................................................47
Front Wheel Drive Lever ................................23
Front Wheels ..................................................40
Fuel Filter .......................................................56
Fuel Filter Element .........................................62
Fuel Gauge.....................................................24
Fuel Injection Nozzle Injection Pressure ........63
Fuel Line.........................................................59
Fuel Lines.......................................................65
Fuse ...............................................................66
Gauges, Meter and Easy Checker(TM) ......... 51

Grease Fittings .............................................. 52
Grill and Radiator Screen .............................. 51
Hand Throttle Lever ....................................... 23
Head Light Switch.......................................... 19
Head Light, Hazard Light etc. ........................ 51
Holes of lifting rods and lower links ............... 33
Hood .............................................................. 47
Horn Button ................................................... 20
Hourmeter / Tachometer ............................... 25
Hydraulic Block Type Outlet .......................... 36
Hydraulic Control ........................................... 35
Hydraulic Control Unit Use Reference Chart . 38
Immediately Stop the Engine if: ..................... 24
Implement Lowering Limit.............................. 35
Inflation Pressure........................................... 39
Injection Pump ............................................... 63
Intake Air Line................................................ 61
Intake Air Line................................................ 65
Lifting Rod (Right).......................................... 33
Light Bulb....................................................... 66
Main Gear Shift Lever
& Range Gear Shift Lever (L-H) .................... 22
Maximum Masses.......................................... 43
Maximum Permissible Load of The Tire
(Applicable Only in Running
on The Public Road) ...................................... 70
Movable Parts................................................ 52
Oil for New Tractors....................................... 16
Operating on Slopes or Rough Terrain.......... 27
Operating the Tractor on a Road ................... 26
Operator's Seat.............................................. 18
Parking .......................................................... 26
Parking Brake ................................................ 23
Parking Brake ................................................ 51
Parking Brake ................................................ 59
PTO Gear Shift lever ..................................... 29
PTO shaft Cover and Shaft Cap .................... 30
Radiator Hose (Water pipes) ......................... 65
Radiator Hose and Clamp ............................. 60
Rear Ballast ................................................... 43
Rear outlet ..................................................... 37
Rear Wheels .................................................. 41
Seat Belt ........................................................ 19
Seat Belt and ROPS (if equipped) ................. 51
Stationary PTO .............................................. 30
Stopping ........................................................ 24
To Fold the ROPS ......................................... 16
To Raise the ROPS to Upright Position......... 17
Top Link ......................................................... 33
Top Link Mounting Holes ............................... 33
Tractor Lights................................................. 21
APPENDICES
Trailer Electrical Outlet ...................................27

Trailer Load Capacity .....................................73
Transmission Fluid / Hydraulic Oil Filter.........61
Transmission Fluid Level................................50
Transport the Tractor Safely...........................27
Turn Signal / Hazard Light Switch ..................20
Walk Around Inspection .................................48
Warm-up Transmission Oil
at Low Ambient Temperatures .......................14
Wheel Bolt Torque..........................................54
75

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OPERATOR'S MANUAL

READ AND SAVE THIS MANUAL

KUBOTA Corporation 2009

Two Wheel Drive

Four Wheel Drive

American Petroleum Institute

American Society of Agricultural and Biological Engineers, USA

American Society for Testing and Materials, USA

Deutsches Institut fr Normung, GERMANY

Dual Traction (4WD)

Feet Per Minute

Glide Shift Transmission

High Speed-Low Speed

Meters Per Second

Power Take Off

Right-hand and left-hand sides are determined by facing

Roll-Over Protective Structures

Revolutions Per Minute

Revolutions Per Second

Society of Automotive Engineers, USA

Slow Moving Vehicle

B1620 / 1820 English (Europe)

Safety Alert Symbol

Position Control-Raised Position

Position Control-Lowered Position

3-Point Lowering Speed Control

Hourmeter/Elapsed Operating Hours

Hazard Warning Lights

Battery Charging Condition

Diesel Preheat/Glow Plugs(Low Temperature

Read Operator's Manual

Indicates an imminently hazardous situation which, if not

Indicates a potentially hazardous situation which, if not

Indicates a potentially hazardous situation which, if not

Indicates that equipment or property damage could result if

Gives helpful information.

STOPPING THE ENGINE...................................................................................... 14

JUMP STARTING .................................................................................................. 15

BOARDING AND LEAVING THE TRACTOR ........................................................ 16

CHECK DURING DRIVING ................................................................................... 24

OPERATING TECHNIQUES ................................................................................. 26

THREE-POINT HITCH & DRAWBAR........................................................................ 32

DRAWBAR (if equipped)........................................................................................ 34

AUXILIARY HYDRAULICS .................................................................................... 36

TIRES, WHEELS AND BALLAST.............................................................................. 39

WHEEL ADJUSTMENT ......................................................................................... 39

SERVICE INTERVALS .......................................................................................... 44

DAILY CHECK ....................................................................................................... 48

EVERY 50 HOURS ................................................................................................ 52

EVERY 100 HOURS .............................................................................................. 54

EVERY 200 HOURS .............................................................................................. 60

EVERY 400 HOURS .............................................................................................. 61

EVERY 800 HOURS .............................................................................................. 63

EVERY 1500 HOURS ............................................................................................ 63

EVERY 3000 HOURS ............................................................................................ 63