Briggs & Stratton 125600 User Manual

Illustrated Parts List

Model Series

125600

TYPE NUMBERS

0100 through 0165.

TABLE OF CONTENTS

Air Cleaner 6. . . . . . . . . . . . . . . . . . . . . . . . .

Blower Housing/Shrouds 7. . . . . . . . . . . .

Camshaft 2. . . . . . . . . . . . . . . . . . . . . . . . . . .

Carburetor 4. . . . . . . . . . . . . . . . . . . . . . . . .

Controls 5. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Crankshaft 2. . . . . . . . . . . . . . . . . . . . . . . . .

Cylinder 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cylinder Head 3. . . . . . . . . . . . . . . . . . . . . .

Electric Starter 7. . . . . . . . . . . . . . . . . . . . . .

Engine Sump 2. . . . . . . . . . . . . . . . . . . . . . .

Exhaust System 6. . . . . . . . . . . . . . . . . . . .

Flywheel 7. . . . . . . . . . . . . . . . . . . . . . . . . . .

Flywheel Brake 5. . . . . . . . . . . . . . . . . . . . .

Fuel Supply 4. . . . . . . . . . . . . . . . . . . . . . . .

Governor Spring 5. . . . . . . . . . . . . . . . . . . .

Ignition 5. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Kits/Gaskets Sets 8. . . . . . . . . . . . . . . . . .

Lubrication 2. . . . . . . . . . . . . . . . . . . . . . . .

Piston Group 2. . . . . . . . . . . . . . . . . . . . . . .

Rewind Starter 7. . . . . . . . . . . . . . . . . . . . . .

REPLACES FORM MS−6537−04/02/2008

FILE IN SECT. 2 OF SERVICE MANUAL

FORM MS−6537−05/28/2008

125600

PRINTED IN U.S.A.

All rights reserved. No part of this material may be reproduced or transmitted,
in any form or by any means, electronic or mechanical, including photocopying,
recording or by any information storage and retrieval system, without permission
in writing from Briggs & Stratton Corporation.

COPYRIGHT by BRIGGS & STRATTON CORPORATION

125600

847

525

524

25

1058 OPERATOR’S MANUAL

523

842

11

287

28

27

29

27

32A

1330 REPAIR MANUAL

1019 LABEL KIT

2

3

306

32

1

307

24

1319 WARNING LABEL

REQUIRED when replacing parts
with warning labels affixed.

718

16

8

9

374

584

585

684

10

26

1024

22

965

943

750

12

15

20

1028

988

737

1027

4A

12

15

357

1055

20

741

146

83

721

743

715

101

20A

46

15A

43

46A 46B

374

1055

4B4

12

17

15

20

43A

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−2 Assemblies include all parts shown in frames. 05/28/2008

2

125600

5

883

718

1034

1026

337

635

383

192

1022

830

238

1029

36

35

51B

886

51A

993

122

51

619

7

13

33

40

40

34

868

45

1023

1022

914

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−3 Assemblies include all parts shown in frames. 05/28/2008

3

125600

365

125

163A

127

133

975

137

117

118

276

276

276

134

104

PRIMER SYSTEM

97

633A

130

95

51

122

122A

51B

972

957B

190

670

187

1059

601

958

601A

957

957B

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−4 Assemblies include all parts shown in frames. 05/28/2008

4

125600

265

267

265A

271

222A

621

51A

269

268

51B

270

51

843

188

474A

222B

122

51A

51B

51

227

562

505

356

356B

578

333

851

334

789A

604

1119A

564

202

923

621

745

209A

922

615

404

616

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−5 Assemblies include all parts shown in frames. 05/28/2008

5

125600

425

968

300

883

445

967

613

966

976

443

300B

883

443A

529A

163A

613

832

613A

836A

676

677

676C

836

677

613A

832C

836A

836

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−6 Assemblies include all parts shown in frames. 05/28/2008

6

125600

78

37

930

921B

969A

304

930A

969

608

55

1211

1210

459

456

309

689

597

510

65

592

58

60

742

305

1036 EMISSIONS LABEL

1005

363

23

73

455

332

309A

853

65

592

925

510

783

784

785

513

742

937

697

783A

651

853

697

801

783

784

785

513

803

802

937

651

783A

545

544

310

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−7 Assemblies include all parts shown in frames. 05/28/2008

7

125600

121 CARBURETOR OVERHAUL KIT

51B

51A

51

104
127

122

977 CARBURETOR GASKET SET

51

51A

134

137

163A

276

633A

137

12

20

20A

358 ENGINE GASKET SET

3

7

9

7

51B

51A

1095 VALVE GASKET SET

51

51

122

163A

524

585

883

993

842

868

883

993

1022

51B

122

163A

276

633A

51B

51A

122

868

1022

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−8 Assemblies include all parts shown in frames. 05/28/2008

8

125600

REF. PART REF. PART REF. PART

NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

1 790363 Cylinder Assembly

(Used After Code Date

04040400).

−−−−−−− Note −−−−−
499678 Cylinder−

Assembly
(Used Before Code
Date 04040500).

2 399269 Kit−Bushing/Seal

(Magneto Side)

3 K299819S Seal−Oil

(Magneto Side)

4 493279 Sump−Engine

4A 493365 Sump−Engine

(Auxiliary PTO)

4B 692509 Sump−Engine

5 795501 Head−Cylinder

(Used After Code Date

05110100).

−−−−−−− Note −−−−−
695276 Head−Cylinder

(Used Before Code
Date 05110200).

7 KΔ695166 Gasket−Cylinder Head
8 495786 Breather Assembly
9 K699833 Gasket−Breather

10 691125 Screw

(Breather Assembly)

11 499675 Tube−Breather
12 K692232 Gasket−Crankcase
13 691137 Screw

(Cylinder Head)

15 691680 Plug−Oil Drain

(Square Socket)

15A 691093 Plug

(Hex Socket)

16 691457 Crankshaft

−−−−−−− Note −−−−−
693291 Crankshaft

Used on Type No(s).
0117, 0158, 0163.

Crankshaft

692823

Used on Type No(s).

0121.
692716 Crankshaft
Used on Type No(s).
0126, 0127.
691456 Crankshaft
Used on Type No(s).
0100, 0105, 0114,
0119, 0124, 0136,
0144, 0145, 0146,
0149, 0159, 0162,

0164.

17 692517 Bearing−Ball
20 K399781S Seal−Oil

(PTO Side)

20A K691952 Seal−Oil

(PTO Side)
(Auxiliary PTO)

22 691092 Screw

(Crankcase
Cover/Sump)

23 697610 Flywheel

−−−−−−− Note −−−−−
692693 Flywheel

Used on Type No(s).
0127, 0130, 0133,

0140.
692987 Flywheel
Used on Type No(s).

0121.
697637 Flywheel
Used on Type No(s).

0148.

24 222698S Key−Flywheel

25 795429 Piston Assembly

(Standard)
(Used After Code Date

07090300).

−−−−−−− Note −−−−−
792004 Piston

Assembly
(Standard)
(Used Before Code
Date 07090400).
795430 Piston
Assembly
(.020” Oversize)
(Used After Code Date

07090300).
791325 Piston
Assembly
(.020” Oversize)
(Used Before Code
Date 07090400).

26 795431 Ring Set

(Standard)
(Used After Code Date

07090300).

−−−−−−− Note −−−−−
791969 Ring Set

(Standard)
(Used After Code Date
05030700 and Before
Code Date 07090400).
499631 Ring Set
(Standard)
(Used Before Code
Date 05030800).
795432 Ring Set
(.020” Oversize)
(Used After Code Date

07090300).
791324 Ring Set
(.020” Oversize)
(Used After Code Date
05030700 and Before
Code Date 07090400).
692786 Ring Set
(.020” Oversize)
(Used Before Code
Date 05030800).

K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121.

z Included in Carburetor Gasket Set−Ref. No. 977.

Δ Included in Valve Gasket Set−Ref. No 1095.

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−9 Assemblies include all parts shown in frames. 05/28/2008

9

125600

REF. PART REF. PART REF. PART

NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

27 691866 Lock−Piston Pin
28 499423 Pin−Piston
29 499424 Rod−Connecting
32 691664 Screw

(Connecting Rod)

32A 695759 Screw

(Connecting Rod)
(Used After Code Date

00042200).

33 499642 Valve−Exhaust
34 499641 Valve−Intake
35 691304 Spring−Valve

(Intake)

36 691304 Spring−Valve

(Exhaust)

37 694086 Guard−Flywheel
40 692194 Retainer−Valve
43 691997 Slinger−Governor/Oil

43A 692505 Slinger−Governor/Oil

Used on Type No(s).

0142.

45 690977 Tappet−Valve
46 694039 Camshaft

46A 694037 Camshaft

(Counterclockwise)

46B 694040 Camshaft

Used on Type No(s).

0142.

KzDΔ692668 Gasket−Intake

51

KzDΔ697735 Gasket−Intake

51A
51BKzDΔ692555 Gasket−Intake

55 691421 Housing−Rewind

Starter

58 697316 Rope−Starter

(Cut To Required
Length)

60 281434S Grip−Starter Rope
65 690837 Screw

(Rewind Starter)

73 691222 Screen−Rotating

−−−−−−− Note −−−−−
691221 Screen−

Rotating
Used on Type No(s).

0148.

78 691108 Screw

(Flywheel Guard)

83 691778 Shaft−Auxiliary Drive

−−−−−−− Note −−−−−
690524 Shaft−Auxiliary

Drive
Used on Type No(s).
0112, 0128.
690522 Shaft−Auxiliary
Drive
Used on Type No(s).
0144, 0157.

95 691636 Screw

(Throttle Valve)

97 499682 Shaft−Throttle

(Metal)

−−−−−−− Note −−−−−
790121 Shaft−Throttle

(Plastic)

101 691623 Pin−Shaft
104 D691242 Pin−Float Hinge
117 498981 Jet−Main

(Standard)
(Used After Code Date

03110600).

−−−−−−− Note −−−−−
498978 Jet−Main

(Standard)
(Used Before Code
Date 03110700).

118 497466 Jet−

Main
(High Altitude)
(Used After Code Date

03110600).

−−−−−−− Note −−−−−
498975 Jet−Main

(High Altitude)
(Used Before Code
Date 03110700).

121 792383 Kit−Carburetor

Overhaul

KzDΔ692799 Spacer−Carburetor

122

122A 792382 Spacer−Carburetor

125 790120 Carburetor
127 D694468 Plug−Welch

130 691203 Valve−Throttle

−−−−−−− Note −−−−−
696564 Valve−Throttle

(Used With Plastic
Throttle Shaft)

133 398187 Float−Carburetor
134 D398188 Kit−Needle/Seat
137 Dz693981 Gasket−Float Bowl
146 690979 Key−Timing

163A

KzD692667 Gasket−Air Cleaner

187 791766 Line−Fuel

(Cut to Required
Length)

188 691147 Screw

(Control Bracket)

190 690940 Screw

(Fuel Tank)

192 694543 Adjuster−Rocker Arm
202 691303 Link−Mechanical

Governor

209A 691291 Spring−Governor

−−−−−−− Note −−−−−
691851 Spring−

Governor
Used on Type No(s).
0100, 0117, 0142,
0145, 0147.
690319 Spring−
Governor
Used on Type No(s).
0118, 0133, 0157,

0158.
691292 Spring−
Governor
Used on Type No(s).
0123, 0163.

K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121.

z Included in Carburetor Gasket Set−Ref. No. 977.

Δ Included in Valve Gasket Set−Ref. No 1095.

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−10 Assemblies include all parts shown in frames. 05/28/2008

10

125600

REF. PART REF. PART REF. PART

NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

222A 792402 Bracket−Control

(Used After Code Date

05110100).

−−−−−−− Note −−−−−
693378 Bracket−

Control
(Used Before Code
Date 05110200).

222B 792403 Bracket−Control

(Used After Code Date

05110100).
Used on Type No(s).
0100, 0105, 0118,
0119, 0134, 0142,
0144, 0157, 0158,
0161, 0162, 0164.

−−−−−−− Note −−−−−
692672 Bracket−

Control
(Used Before Code
Date 05110200).
Used on Type No(s).
0100, 0105, 0118,
0119, 0134, 0142,
0144, 0157, 0158,
0161, 0162.

227 691467 Lever−Governor

Control

238 691300 Cap−Valve
265 690798 Clamp−Casing

265A 691024 Clamp−Casing

267 691044 Screw

(Casing Clamp)

268 691025 Casing−Control Wire

(Cut To Required
Length)

269 691026 Wire−Control

(Cut To Required
Length)

270 691027 Nut

(Control Wire Casing)

271 691028 Lever−Control

z271716 Washer−Sealing

276 D

287 690940 Screw

(Dipstick Tube)

300 694248 Muffler

300B 699769 Muffler

304 499676 Housing−Blower

−−−−−−− Note −−−−−
499677 Housing−

Blower
Used on Type No(s).
0105, 0115, 0119,
0126, 0133, 0134,
0140, 0142, 0144,
0157, 0158, 0161,
0162, 0164.
695976 Housing−
Blower
(Used After Code Date

06081300).
Used on Type No(s).
0123, 0163.
499677 Housing−
Blower
(Used Before Code
Date 06081400).
Used on Type No(s).

0123.

305 691108 Screw

(Blower Housing)

306 691232 Shield−Cylinder
307 690345 Screw

(Cylinder Shield)

309 695550 Motor−Starter

(Used Before Code
Date 07052900).

309A 795092 Motor−Starter

(Used After Code Date

07052800).

310 692327 Bolt

(Starter Motor)

332 690662 Nut

(Flywheel)

333 802574 Armature−Magneto
334 691061 Screw

(Magneto Armature)

337 692051 Plug−Spark

(Resistor)

−−−−−−− Note −−−−−
692720 Plug−Spark

(EMS)

356 692390 Wire−Stop

356B 692151 Wire−Stop

357 692191 Key−Drive Pulley
358 792384 Gasket Set−Engine
363 19069 Puller
365 691129 Screw

374 691074 Washer

383 19374S Wrench−Spark Plug
404 690272 Washer

425 690670 Screw

443 692523 Screw

443A 691637 Screw

445 491588S Filter−Air Cleaner

455 791960 Cup−Flywheel
456 692299 Plate−Pawl Friction
459 281505S Ratchet−Pawl

474A 695730 Alternator

505 691251 Nut

510 795093 Drive−Starter
513 692358 Clutch−Drive

−Flywheel

(Carburetor)
(Used After Code Date

05110100).

−−−−−−− Note −−−−−
691136 Screw

(Carburetor)
(Used Before Code
Date 05110200).

(Camshaft)

(Governor Crank)

(Air Cleaner Cover)

(Air Cleaner Primer
Base)

(Air Cleaner Primer
Base)

Cartridge

(Governor Control
Lever)

K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121.

z Included in Carburetor Gasket Set−Ref. No. 977.

Δ Included in Valve Gasket Set−Ref. No 1095.

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−11 Assemblies include all parts shown in frames. 05/28/2008

11

125600

REF. PART REF. PART REF. PART

NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

523 499621 Dipstick
524 K692296 Seal−Dipstick Tube
525 495265 Tube−Dipstick

529A 691923 Grommet

544 690786 Armature−Starter
545 492919 Washer Set

(Starter Motor)

562 691119 Bolt

(Governor Control
Lever)

564 693808 Screw

(Control Cover)

578 398153 Wire Assembly
584 697734 Cover−Breather

Passage

585 K691879 Gasket−Breather

Passage

592 690800 Nut

(Rewind Starter)

597 691696 Screw

(Pawl Friction Plate)

601 791850 Clamp−Hose

601A 691038 Clamp−Hose

604 692669 Cover−Control
608 497680 Starter−Rewind
613 691108 Screw

(Muffler)

613A 691140 Screw

(Muffler)

615 690340 Retainer−Governor

Shaft

616 698801 Crank−Governor
619 691108 Screw

(Cylinder Head Plate)

621 692310 Switch−Stop

z 691321 Seal−Choke/Throttle

633AD

Shaft

635 66538S Boot−Spark Plug
651 690345 Screw

(Starter Gear Cover)

670 692294 Spacer−Fuel Tank

676 397931 Deflector−Muffler

676C 497682 Deflector−Muffler

677 690661 Screw

(Muffler Deflector)

684 690345 Screw

(Breather Passage
Cover)

689 691855 Spring−Friction
697 691127 Screw

(Drive Cap)

715 691147 Screw

(Stop Shaft)

718 690959 Pin−Locating
721 690449 Shaft−Stop
737 692511 Screw

(Oil Filter Adapter)

741 794388 Gear−Timing

(Use Without Woodruff
Key)
(Used After Code Date

07093000).

−−−−−−− Note −−−−−
790345 Gear−Timing

(Use Without Woodruff
Key)
(Used Before Code
Date 07100100).
691830 Gear−Timing
(Uses Woodruff Key)

742 93941 Retainer−E-Ring
743 691772 Gear−Drive

(Counterclockwise)

−−−−−−− Note −−−−−
690516 Gear−Drive

(Clockwise)

745 691648 Screw

(Brake)

750 691683 Screw

(Oil Pump Cover)

783 691918 Gear−Pinion

783A 691269 Gear−Pinion

784 795095 Cover−Starter Gear

785 692352 Gasket−Starter Cover

789A 696546 Harness−Wiring

801 690782 Cap−Drive
802 695267 Cap−End
803 695266 Housing−Starter
830 694544 Stud−Rocker Arm
832 691466 Guard−Muffler

832C 695593 Guard−Muffler

836 691147 Screw

(Muffler Guard)

836A 697551 Screw

(Muffler Guard)

842 K691031 Seal−O Ring

(Dipstick Tube)

843 691884 Sleeve−Lever
847 692047 Dipstick/Tube

Assembly

851 493880S Terminal−Spark Plug
853 695268 Adaptor−Wire
868 KΔ692044 Seal−Valve
883 KΔ691893 Gasket−Exhaust
886 696268 Gasket Kit−Cylinder

Head/Plate

914 691108 Screw

(Rocker Cover)

921B 697921 Cover−Blower Housing

922 691831 Spring−Brake

−−−−−−− Note −−−−−
692135 Spring−Brake

Used on Type No(s).
0100, 0163.
692135 Spring−Brake
(Used After Code Date

06081300).
Used on Type No(s).

0123.
691831 Spring−Brake
(Used Before Code
Date 06081400).
Used on Type No(s).

0123.

K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121.

z Included in Carburetor Gasket Set−Ref. No. 977.

Δ Included in Valve Gasket Set−Ref. No 1095.

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−12 Assemblies include all parts shown in frames. 05/28/2008

12

125600

REF. PART REF. PART REF. PART

NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

923 691994 Brake

−−−−−−− Note −−−−−
695891 Brake

Used on Type No(s).
0100, 0163.
695891 Brake
(Used After Code Date

06081300).
Used on Type No(s).

0123.
691994 Brake
(Used Before Code
Date 06081400).
Used on Type No(s).

0123.

925 795403 Cover−Linkage

(Used After Code Date

07072200).

−−−−−−− Note −−−−−
690595 Cover−

Linkage
(Used Before Code
Date 07072300).

930 691919 Guard−Rewind

−−−−−−− Note −−−−−
499679 Guard−Rewind

Used on Type No(s).

0148.

930A 692675 Guard−Rewind

937 691325 Spline−Starter
943 692514 Seal−O Ring

(Oil Pump Cover)

957 692046 Cap−Fuel Tank

(Plastic)

958 698183 Valve−Fuel Shut Off

(Plastic)

965 692507 Cover−Oil Pump
966 692673 Base−Air Cleaner

Primer

967 493537S Filter−Pre Cleaner
968 692298 Cover−Air Cleaner
969 691138 Screw

(Blower Housing
Cover)

969A 697922 Screw

(Blower Housing
Cover)

972 699374 Tank−Fuel

(Plastic)

975 493640 Bowl−Float
976 694395 Primer−Carburetor
977 792385 Gasket Set−Carburetor
988 692515 Gasket−Oil Adapter
993 KΔ694088 Gasket−Cylinder Head

Plate

1005 691346 Fan−Flywheel

1019 695247 Kit−Label
1022 KΔ691890 Gasket−Rocker Cover
1023 499624 Cover−Rocker
1024 692508 Pump−Oil
1026 692045 Rod−Push
1055 692623 Tube−Oil Pump
1058 277102 Operator’s Manual
1059 692311 Kit−Screw/Washer
1095 792386 Gasket Set−Valve

1119 691183 Screw

(Alternator)

1210 498144 Pulley/Spring

Assembly

1027 692513 Filter−Oil
1028 692516 Adapter−Oil Filter
1029 691230 Arm−Rocker
1034 691343 Guide−Push Rod
1036 Label−Emissions

(Available From A
Briggs & Statton
Authorized Dealer)
(Pulley)

1211 498144 Pulley/Spring

Assembly
(Spring)

1319 794467 Label−Warning
1330 272147 Manual−Repair

K Included in Engine Gasket Set
D Included in Carburetor Overhaul Kit−Ref. No. 121.

−Ref. No.358.

z Included in Carburetor Gasket Set−Ref. No. 977.

Δ Included in Valve Gasket Set−Ref. No 1095.

Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.

6537−13 Assemblies include all parts shown in frames. 05/28/2008

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