B&S Quantum

Parts Manual
Mfg. No: 123782-0118-01
Copyright © Briggs and Stratton. All Rights reserved 11-Aug-2020

Table Of Contents
Model Components Page

Air Cleaner Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Blower Hsg, Flywheels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Carburetor Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Control Bracket Assy, Brake. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Crankshaft, Piston Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Cylinder,Cyl. Head,Oil Fill. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electric Starter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fuel Tank Assy, Hoses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Gasket Sets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Muffler, Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Replacement Engine - US & Canada. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Rewind Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Sump Base Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
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Copyright © Briggs and Stratton. All Rights reserved 3 11-Aug-2020

Air Cleaner Groups
Mfg. No: 123782-0118-01
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Air Cleaner Groups
REF NO PART NO QTY DESCRIPTION
163A 272296 GASKET, Air Cleaner
-Included in Gasket Set-See Ref. 358
163 272653 GASKET, Air Cleaner
387 496115 PRIMER, Carburetor
529A 280943 GROMMET
-(Breather)
n
529 281299 GROMMET
966A 492363 BASE, Air Cleaner Primer
966 496116
-Used Before Code Date 93080200
BASE, Air Cleaner
t i o
967 491588
-(Primer)
-Used After Code Date 93080100
FILTER, A/C Cartridge
u c
968A
968
281069
281340
COVER, Air Cleaner
COVER, Air Cleaner
o d
969 94120 SCREW
p
-(Blower Housing) r
971A
971
94269
94121
SCREW
SCREW
R e
-(Air Cleaner Base)
-(Air Cleaner Base)
o r
t F
N o

Blower Hsg, Flywheels
Mfg. No: 123782-0118-01
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Blower Hsg, Flywheels
23A 492175 FLYWHEEL
23 492177 FLYWHEEL
37 224511 GUARD, Flywheel
38 94608 SCREW
-(Fuel Shut Off)
304 493293 HOUSING, Blower
-(Compliance Engines)
304 493294 HOUSING, Blower
-(Non Compliance Engines)
o n
305 94513 SCREW
-(Blower Housing)
t i
324
332
224251
92284
SCREEN, Rotating
NUT
-(Flywheel)
u c
363
455
19069
224250
PULLER, Flywheel
CUP, Flywheel
o d
949A 281143 GUARD, Rewind
p r
-Use(s): 94639 Screw-Mtg. (Snap-In Style For 1 Quart Tanks)
949 281136
e
GUARD, Rewind
-(Snap In) (1 1/2 Quart Tank)
R
o r
t F
N o

Carburetor Assembly
Mfg. No: 123782-0118-01
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Carburetor Assembly
95 94098 SCREW
-(Throttle Valve)
98 398185 KIT, Idle Speed
-(Idle Speed) (Lmt 26, 27, 28, 31)
104 231371 PIN, Float Hinge
-Included in Carburetor Kit-Part No. 493762
108 223471 VALVE, Choke
116 ----- No Nomenclature
-Included in Carburetor Kit-Part No. 493762. Included in Carburetor Gasket Set-
Part No. 490937
118 493765 KIT, Idle Mixture
124 94525 SCREW
125 494217 CARBURETOR
-(Choke)
130 223470 VALVE, Throttle
131 493267 KIT, Throttle Shaft
133
134
398187
398188
FLOAT, Carburetor
KIT, Needle/Seat
o n
r t i
c
F o u
Part No. 490937
141
617
494218
t
270344
o d KIT, Choke Shaft

SEAL, O-Ring
o
-(Intake Manifold) Included in Carburetor Kit-Part No. 493762. Included in
634
N ep
-----r Carburetor Gasket Set-Part No. 490937
No Nomenclature
Part No. 490937
955
975
R493869
493640
JET, Main
-OR 493763 Screw-Fuel Bowl Kit (High Altitude)
BOWL, Float
Footnotes:
OR 494870 Screw-Carb. Bowl Mtg. (For High Altitude) Part number has dual meaning - in some cases it's a std jet; in others it's a high alt jet. See hard copy (paper or fiche) of
appropriate parts list to verfy part usage.

Carburetor Assembly
Mfg. No: 123782-0118-01
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Carburetor Assembly
95 94098 SCREW
-(Throttle Valve)
98 398185 KIT, Idle Speed
-(Idle Speed) (Lmt 26, 27, 28, 31)
Part No. 490937
118 493765 KIT, Idle Mixture
124 94525 SCREW
125A 496114 CARBURETOR
-(Primer)
130 223470 VALVE, Throttle
131 493267 KIT, Throttle Shaft
133
134
398187
398188
FLOAT, Carburetor
KIT, Needle/Seat
o n
137 -----
r No Nomenclature i
t
o u c
Part No. 490937
617
t F
270344
d
SEAL, O-Ring
634
o
-----
r o Carburetor Gasket Set-Part No. 490937
No Nomenclature
955A N ep
494870
Part No. 490937
JET, Main
955A
975
R
493637
493640
JET, Main
BOWL, Float
Footnotes:
Part number has dual meaning - in some cases it's a std jet; in others it's a high alt jet. See hard copy (paper or fiche) of appropriate parts list to verfy part usage.

Control Bracket Assy, Brake
Mfg. No: 123782-0118-01
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Control Bracket Assy, Brake
98A 493280 SCREW
-(Idle Speed)
188A 94644 SCREW
-(Control Bracket)
201 262579 LINK, Mechanical Governor
209 262678 SPRING, Governor
258 94512 SCREW
n
-(Tapping)
268 66986 CASING, Control Wire
269 26099
-(Cut To Required Length)
WIRE, Control
t i o
270 63426 NUT
u c
-(Cut To Required Length) If Longer Wire is Needed, Specify Length in Inches; if
Shorter Wire is Needed, Order and Cut To Required Length.
271 290568
-(Control Wire Casing)
LEVER, Control
o d
423
467
93758
280857
SCREW
-(Rotating Screen)
KNOB, Control
p r
575
618
396291
262749
R e
SWITCH, Starting
-Include(s): 392832 Key Set
SPRING, Choke Return
620 493895
o r BRACKET, Control
-(Manual Friction)
621
670A
t F
396847
493823
SWITCH, Stop
SPACER
o
-(Includes 2) Included in Gasket Set-See Ref. 358
843 272616 SLEEVE, Lever
922
923
935
N 262640
493442
398758
SPRING, Brake
BRAKE
SWITCH, Interlock
-(12 Volt)

Crankshaft, Piston Group
Mfg. No: 123782-0118-01
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Crankshaft, Piston Group
16 493946 CRANKSHAFT
-For Timing Gear Key-Order Part No. 94388
24 222698 KEY, Flywheel
25 493262 PISTON ASSEMBLY
-(Standard)
-(.010 Oversize)
n
-(.020 Oversize)
-(.030 Oversize)
t i o
26
26
493261
493388
SET, Ring
-(Standard)
SET, Ring
u c
26 493389
-(.010 Oversize)
SET, Ring
o d
r
-(.020 Oversize)
26 493390 SET, Ring
27 26026 LOCK, Piston Pinp

-(.030 Oversize)
e
R
28 298908 PIN, Piston
-(.005 Oversize)
28
29
298909
490566
o r PIN, Piston
ROD, Connecting
-(Standard)
29
t F
490743 ROD, Connecting
-(.020 Undersize)
o
32 94699 SCREW
-(Connecting Rod)
33
34
35
N 262651
262652
262224
VALVE, Exhaust
VALVE, Intake
SPRING, Valve
-(Intake)
40 93312 RETAINER, Valve
-(Valves With Groove In Stem)
45 262204 TAPPET, Valve
227 492349 LEVER, Governor Control
230 67072 WASHER
-(Stop Switch Bracket)
377 93065 KEY, Woodruff
-(#6)
377 94329 KEY, Drive Pulley
562 92613 BOLT
-(Governor Lever)
592 231082 NUT
-(Governor Control)
615 94474 RETAINER, Governor Shaft
616 262578 CRANK, Governor
741 262598 GEAR, Timing

Cylinder,Cyl. Head,Oil Fill
Mfg. No: 123782-0118-01
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1 493260 CYLINDER ASSEMBLY
2 293708 KIT, Bushing/Seal
-(Plain Bearing)
3 299819 SEAL, Oil
-(Plain Bearing) Included in Gasket Set-See Ref. 358
5 213861 HEAD, Cylinder
7 272200 GASKET, Cylinder Head
n
8 494489 BREATHER ASSEMBLY
9A 272238 GASKET, Breather Passage
t i o
9
10
272481
94650
GASKET, Rocker Cover
SCREW
u
c
11 231685
-(Breather Assembly)
TUBE, Breather
o d
13 94547 SCREW
-(Cylinder Head)
p r
52
54
272199
94526 SCREW
R e
GASKET, Intake
-(Intake Manifold)
284 94511
o r SCREW
F
306 224324 SHIELD, Cylinder
307 94515 SCREW
337
o t
802592
-(Cylinder Shield)
PLUG, Spark
-(Resistor)
383
523 N 89838
493950
WRENCH, Spark Plug
CAP, Oil Fill
523 495264 DIPSTICK
524 280393 SEAL, O-Ring
-(Dipstick Tube) Included in Gasket Set-See Ref. 358
525 493952 TUBE, Dipstick
572 224328 BAFFLE, Breather
625 492717 STACK, Air
635 66538 BOOT, Spark Plug
842 280966 SEAL, O-Ring
847 495263 DIPSTICK/TUBE ASSEMBLY
869 213512 SEAT, Valve
-(Intake)
870 213513 SEAT, Valve
-(Exhaust)
871 262001 BUSHING, Valve Guide
-(Exhaust)
871 63709 BUSHING, Valve Guide
-(Intake)
1019 494256 KIT, Label

Mfg. No: 123782-0118-01
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1058 272262 MANUAL, Operator's
o n
t i
u c
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p r
R e
o r
t F
N o

Electric Starter
Mfg. No: 123782-0118-01
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Electric Starter
22A 94268 SCREW
-(Crankcase Cover)
74 93490 SCREW
-(Rotating Screen)
309 494233 MOTOR, Starter
310 94553 BOLT
-(Starter Motor)
n
510 494147 DRIVE, Starter
513 394815 CLUTCH, Starter
544
548
492921
492919
ARMATURE, Starter
WASHER
t i o
782 281127
-(Starter Motor)
GEAR, Starter Drive
u c
783
784
261606
224262
GEAR, Starter Drive
COVER, Starter Gear
o d
785
801
272201
492335 CAP, Drive
p r
GASKET, Starter Cover
e
802 492922 CAP, End
803 492920 HOUSING, Starter
937
938
281125
93941
r R
SPLINE, Starter
RETAINER, E Ring
F o
o t
N

Fuel Tank Assy, Hoses
Mfg. No: 123782-0118-01
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Fuel Tank Assy, Hoses
187A 492791 LINE, Fuel
187 492790 LINE, Fuel
-(6 3/4)
188 398540 SCREW
-(Control Bracket)
265A 22372 CLAMP, Casing
265B 224057 CLAMP, Casing
265
267
213146
94204
CLAMP, Casing
SCREW
o n
284 94511
-(Casing Clamp)
SCREW
t i
353A 94581
NUT
-(Carburetor Primer)
u c
387A
528
394281
399254
PRIMER, Carburetor
LINE, Fuel
o d
601 93053
-(1/4 O.D.)
CLAMP, Hose
p r
601 93807
e
-(Green)
CLAMP, Hose
R
-(Black)
r
670 280512 SPACER, Fuel Tank
957 397974 CAP, Fuel Tank
958A
F
494539 o -(Plastic)
VALVE, Fuel Shut Off
-(Plastic)
958
972 o t
494768
494528
VALVE, Fuel Shut Off
-(Upper)
TANK, Fuel
N -(1-1/2 Quart) (Black)

Gasket Sets
Mfg. No: 123782-0118-01
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Gasket Sets
3 299819 SEAL, Oil
-(Plain Bearing) Included in Gasket Set-See Ref. 358
7 272200 GASKET, Cylinder Head
9A 272238 GASKET, Breather Passage
9 272481 GASKET, Rocker Cover
12 272198 GASKET, Crankcase
o n
20 399781 SEAL, Oil
t i
52 272199 GASKET, Intake
u
-Included in Gasket Set-See Ref. 358 c
d
o
r
118 493765
Part No. 490937
e
KIT, Idle Mixturep
121
127
493762
-----
r R
KIT, Carburetor Overhaul
-(Carburetor ID No. M24)
No Nomenclature
134
F
398188 o -Included in Carburetor Kit-Part No. 493762
KIT, Needle/Seat
137
o t
----- No Nomenclature
Part No. 490937
163A
163
N 272296
272653
GASKET, Air Cleaner
GASKET, Air Cleaner
358 493263 GASKET SET, Engine
358 496117 GASKET SET, Engine
524 280393 SEAL, O-Ring
-(Dipstick Tube) Included in Gasket Set-See Ref. 358
617 270344 SEAL, O-Ring
Carburetor Gasket Set-Part No. 490937
Part No. 490937
670A 493823 SPACER
-(Includes 2) Included in Gasket Set-See Ref. 358
842 280966 SEAL, O-Ring
883 272253 GASKET, Exhaust
977 490937 SET, Carburetor Gasket
-(Lms 11)

Muffler, Electrical
Mfg. No: 123782-0118-01
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Muffler, Electrical
81 223664 LOCK, Muffler Screw
258 94512 SCREW
-(Tapping)
300 490547 MUFFLER
305A 94510 STUD
333 802574 ARMATURE, Magneto
334 93381 SCREW
346A 94602 SCREW
-(Spark Arrestor)
o n
346 93705 SCREW
-(8-32 X 3/8)
t i
356 398808 WIRE, Stop
u c
474
613
492841
94231
ALTERNATOR
SCREW
-(Muffler)
o d
676B
676A
393760
393756
DEFLECTOR, Muffler
p
DEFLECTOR, Muffler
r
676
789A
396548
493380
R e
-(Side Outlet)
DEFLECTOR, Muffler
HARNESS, Wiring
789 493379
o r -(Compliance Engines)
HARNESS, Wiring
-(Non Compliance Engines)
832
851
t F
494224
221798
GUARD, Muffler
TERMINAL, Spark Plug
883
N o
272253 GASKET, Exhaust

Replacement Engine - US & Canada
----- No engine replacement. Repair engine with individual parts.
----- Top No-Load Speed: 3200
-Trim: ALL
o n
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p r
R e
o r
t F
N o

Rewind Assembly
Mfg. No: 123782-0118-01
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Rewind Assembly
55 492831 HOUSING, Rewind Starter
56 493824 PULLEY/SPRING ASSEMBLY
-(Pulley)
57 262594 SPRING, Rewind Starter
58 280399 ROPE, Starter
59 396892 INSERT, Grip
60
69A
393152
224322
INSERT, Grip
WASHER
o n
69 280973
-(Pawl Friction Plate)
WASHER
t i
456 224321
-(Starter Clutch)
PLATE, Pawl Friction
u c
459
461
492833
262626
SPRING, Ratchet
PIN, Starter Grip
o d
515
608
262625
493295
SPRING, Friction
STARTER, Rewind
p r
-Include(s): 94128 Screw-Hex. Hd. 92987 Nut-Hex.
946A
946
1016
223294
396526
224278
e
STOP, Rope
R
GUIDE, Rope
SPACER
o r -(Rewind)
t F
N o

Sump Base Assemblies
Mfg. No: 123782-0118-01
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Sump Base Assemblies
12 272198 GASKET, Crankcase
15A 94470 PLUG, Oil Drain
-(1/16 27 NPT)
15 94613 PLUG, Oil Drain
-(Flush)
18A 493365 SUMP, Engine
-(Right Angle Drive)
18 493279 SUMP, Engine
o n
i
20 399781 SEAL, Oil
22 94220
SCREW
c t
u
22 94612 SCREW
-(Crankcase Cover) (Hole Nearest Breather)
46A 493740 CAMSHAFT
-(Clockwise)
o d
46
47
492830
493737
CAMSHAFT
p r
SLINGER, Governor/Oil
69B
83A
68938
231278
WASHER
R e
-(13/16 ODx17/32 ID) Use on Aux Drive PTO.Cam
GEAR, Drive
-(Clockwise)
83
87
231671
391484
o r SHAFT, Auxiliary Drive
SEAL, Oil
F
-(1/2 Auxiliary Drive Shaft)
263 93572 SCREW
720
721 o t
93474
224249
-(10-32 X 3/8)
PIN, Shaft
STOP, Shaft

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Parts Manual

Mfg. No: 123782-0118-01

Copyright © Briggs and Stratton. All Rights reserved 11-Aug-2020

Model Components Page

Copyright © Briggs and Stratton. All Rights reserved 3 11-Aug-2020

Copyright © Briggs and Stratton. All Rights reserved 4 11-Aug-2020

-(Air Cleaner Base)

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Copyright © Briggs and Stratton. All Rights reserved 6 11-Aug-2020

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Copyright © Briggs and Stratton. All Rights reserved 8 11-Aug-2020

o d KIT, Choke Shaft

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27 26026 LOCK, Piston Pinp

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N -(1-1/2 Quart) (Black)

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