Briggs & Stratton 125600 Series Setup guide

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PRINTED IN U.S.A.
FORM MS−6537−05/28/2008
REPLACES FORM MS−6537−04/02/2008
FILE IN SECT. 2 OF SERVICE MANUAL
125600
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. . . . . . . . . . . . . . . . . . . . . .

125600
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
6537−2Assemblies include all parts shown in frames. 05/28/2008
2
1019 LABEL KIT
11
584
585
684
3
1
2
306
307
718 8
9
10
32
32A
29
28 27
27
26
25
24
357
741
146
16
46
43
46A 46B
43A
374
374
1055
12
17
15 20
15
20
15
20
12
12
15A
20A
4A 4B4
22
715
721
101
743
83
847
287
525
523
524
842
1055
737
1027
988
1028
1024 965 943
750
1330 REPAIR MANUAL
1058 OPERATOR’S MANUAL 1319 WARNING LABEL
REQUIRED when replacing parts
with warning labels affixed.

125600
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
6537−3Assemblies include all parts shown in frames. 05/28/2008
3
1023
1022
914
1022
122
51
883
718
619
1034
40
868
40
33
34
7
993
886
36
35
238
1029
830
192
45
1026
13
635
337
383
5
51A
51B

125600
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
6537−4Assemblies include all parts shown in frames. 05/28/2008
4
PRIMER SYSTEM
97
633A
51
95
130
127
163A
122
276
137
104
125
134
133
975
276
117
276
118
365
190
972
957
1059
187
958
670
601
601A
51B
122A
957B
957B

125600
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
6537−5Assemblies include all parts shown in frames. 05/28/2008
5
843
188
202
267
265
265A
271
269
268
270
564
604
227 562
505
615
404
616
209A
333
851
334
356
745
922
621
923
621
51
222A
51A 51B
122 51
222B
51A 51B
578
1119A
474A
356B
789A

125600
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
6537−6Assemblies include all parts shown in frames. 05/28/2008
6
425
968
445
967
443 443A
529A
163A
976
966
300 613
883
613A
836
836A
836
832
832C
677
677
676
676C
836A
883
613
613A
300B

125600
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
6537−7Assemblies include all parts shown in frames. 05/28/2008
7
930 930A
332
455
73
1005
363
23
37
78
305
65
592
925
304
608
55 65
592
1211
1210
58
60
459
689
456
597
969
921B
969A
1036 EMISSIONS LABEL
309 510 742
937
783
784
785
513
651
783A
801
544
697
803 310
802
853
545
853
697
783A
651
513
785
784
783
937
742
510
309A

125600
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
6537−8Assemblies include all parts shown in frames. 05/28/2008
8
3
9
12
20
20A
1022
122
51
883
868
7
993
524
842
163A
585
1022
122
51
883
868
7
993
1095 VALVE GASKET SET
358 ENGINE GASKET SET
122
51
163A
633A
137
104
134
276
127
122
51
163A
633A
137
276
977 CARBURETOR GASKET SET
51A
51B
51A
51B
51A
51B
51A
51B
121 CARBURETOR OVERHAUL KIT

125600
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
6537−9Assemblies include all parts shown in frames. 05/28/2008
9
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)
3K299819S 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).
7KΔ695166 Gasket−Cylinder Head
8 495786 Breather Assembly
9K699833 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.
692823 Crankshaft
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).
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
ΔIncluded in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

125600
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
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.
51KzDΔ692668 Gasket−Intake
51AKzDΔ697735 Gasket−Intake
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
122KzDΔ692799 Spacer−Carburetor
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
163AKzD692667 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.
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
ΔIncluded in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION