Briggs & Stratton 123K00 Series Setup guide

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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.
PRINTED IN U.S.A.
FORM MS−5054−07/09/2008
REPLACES FORM MS−5054−05/16/2008
FILE IN SECT. 2 OF SERVICE MANUAL
123K00
Illustrated Parts List
Model Series
123K00
TYPE NUMBERS
0005 through 3717.
TABLE OF CONTENTS
Alternator 6. . . . . . . . . . . . . . . . . . . . . . . . . .
Air Cleaner 4. . . . . . . . . . . . . . . . . . . . . . . . .
Blower Housing/Shrouds 5. . . . . . . . . . . .
Camshaft 2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Carburetor 3. . . . . . . . . . . . . . . . . . . . . . . . .
Controls 4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankshaft 2. . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric Starter 6. . . . . . . . . . . . . . . . . . . . . .
Electrical 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Sump 2. . . . . . . . . . . . . . . . . . . . . . .
Exhaust System 4. . . . . . . . . . . . . . . . . . . .
Flywheel 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Flywheel Brake 6. . . . . . . . . . . . . . . . . . . . .
Fuel Supply 4. . . . . . . . . . . . . . . . . . . . . . . .
Governor Spring 4. . . . . . . . . . . . . . . . . . . .
Ignition 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Kits/Gaskets 2 & 3. . . . . . . . . . . . . . . . . . . . . . . .
Lubrication 2. . . . . . . . . . . . . . . . . . . . . . . .
Piston Group 2. . . . . . . . . . . . . . . . . . . . . . .
Rewind Starter 6. . . . . . . . . . . . . . . . . . . . . .
Valves 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−2Assemblies include all parts shown in frames. 07/09/2008
2
10
3
128
9
718
307
306
383
635
337
13 5
7
51
54
50
11
33
36
40
22 20
15
12
4
847
523
287
524
525
842
9
883
1095 VALVE GASKET SET
7
45
34
35
40 45
12
9
7
3
358 ENGINE GASKET SET
883
842
617
524
163
51
20
585
668
32
32A
27
26
27
25
29
28
24
146
741
16
43
46
870
869
871
306A
684
585
584
868
1019 LABEL KIT
1330 REPAIR MANUAL
1058 OPERATOR’S MANUAL
1319 WARNING LABEL
REQUIRED when replacing parts
with warning labels affixed.

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−3Assemblies include all parts shown in frames. 07/09/2008
3
118
97
975
133
134
125
PRIMER SYSTEM
617
95
130
633
127
163
276
137
104
365
276
276 117
97
975
133
134
617
95
130A
633
163
276
137
104
365
276
276
CHOKE SYSTEM
108
692
633A
125A
109A
127
118A
117A
AUTOCHOKE SYSTEM
97
975
133
134
617
231
130
633
163
276
137
104
276
108A
633A
125B 109B
127
117B
276
118B
134
121 CARBURETOR OVERHAUL KIT
977 CARBURETOR GASKET SET
163
137 276
104
127
137
163 633
617
633A
276
617
633
633A
130A
130

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−4Assemblies include all parts shown in frames. 07/09/2008
4
670
190
930
240
616
404
615
505
562
202
188
843A
843
265
267
270
271
268
621
227
222
222E222D
222C
668
621
668
668
668
601
269 209B
187C
187
187B
187A
601
601A
601
601
972 972B
1059
957A
677
613
81
883
300
676
832
676C
836
677
163
529
970
159
443A
445A
967A
968B
425A 966A
976
957B
467
1387
1388
1386
883
291
957A 957B
836
832B
300B
613B
81
836B
976
163
529
966B

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−5Assemblies include all parts shown in frames. 07/09/2008
5
930A
930
921E
969
921C
969A
604A
564A
921B
969A
564
604
925
305
304
78
37
1036 EMISSIONS LABEL
921A
921F
921G
604B
564B
921K
969A
921J
969A
969A
921L
969A
604C
564B
921N
969A

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−6Assemblies include all parts shown in frames. 07/09/2008
6
621
922
745
236
923
990A
1160
497
347
627
851
334
910
474
1119
578
356
935
333
356D
356B
789B
1236
1009
60
58
592
65
597
456
689
459
1210
1211
55
608
363
23A
455
332
1005
310
802
853
803
544
801
783A
651
513
785
784
783
937
742
309
545
510
853
697
783A
651
513
785
784
783
937
742
510
309A
334
851A
635A
333A
923B 621 922A
922A
923A

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−7Assemblies include all parts shown in frames. 07/09/2008
7
1 697322 Cylinder Assembly
2 399269 Kit−Bushing/Seal
(Magneto Side)
3K299819S Seal−Oil
(Magneto Side)
4 493279 Sump−Engine
−−−−−−− Note −−−−−
696294 Sump−Engine
Used on Type No(s).
0121, 0194, 0244.
498983 Sump−Engine
Used on Type No(s).
0131, 0134, 0138.
5 691160 Head−Cylinder
7K∅692249 Gasket−Cylinder Head
8 695250 Breather Assembly
9K∅696125 Gasket−Breather
10 691125 Screw
(Breather Assembly)
11 691781 Tube−Breather
12 K692232 Gasket−Crankcase
13 690912 Screw
(Cylinder Head)
15 691680 Plug−Oil Drain
(Square Socket)
16 691450 Crankshaft
−−−−−−− Note −−−−−
691451 Crankshaft
Used on Type No(s).
0015, 0060, 0062,
0107, 0116, 0117,
0120, 0121, 0127,
0139, 0145, 0147,
0181, 0183, 0184,
0185, 0193, 0194,
0195, 0196, 0197,
0208, 0209, 0210,
0217, 0218, 0222,
0223, 0224, 0225,
0226, 0230, 0231,
0232, 0235, 0237,
0239, 0244, 0261,
0266, 0271, 0273,
0277, 0283, 0307,
0336, 0515, 0560,
0615.
696009 Crankshaft
Used on Type No(s).
0114.
691455 Crankshaft
Used on Type No(s).
0018, 0126, 0131,
0134, 0138, 0219,
0230, 0234, 0238,
0243, 0289, 0518.
694849 Crankshaft
Used on Type No(s).
0005, 0137, 0156,
0236, 0269.
694478 Crankshaft
Used on Type No(s).
0240, 0332.
696290 Crankshaft
Used on Type No(s).
0113, 0130.
694850 Crankshaft
Used on Type No(s).
0132, 0509.
20 K399781S Seal−Oil
(PTO Side)
22 691092 Screw
(Crankcase Cover/
Sump)
23A 691987 Flywheel
−−−−−−− Note −−−−−
691992 Flywheel
Used on Type No(s).
0005, 0113, 0130,
0131, 0132, 0134,
0137, 0138, 0156,
0236, 0238, 0269,
0509.
696291 Flywheel
Used on Type No(s).
0121, 0194, 0244.
24 222698S Key−Flywheel
25 795429 Piston Assembly
(Standard)
(Used After Code Date
07090300).
−−−−−−− Note −−−−−
791097 Piston
Assembly
(Standard)
(Used Before Code
Date 07090400).
795430 Piston
Assembly
(.020” Oversize)
(Used After Code Date
07090300).
791326 Piston
Assembly
(.020” Oversize)
(Used After Code Date
04102100 and Before
Code Date 07040400).
697341 Piston
Assembly
(.020” Oversize)
(Used Before Code
Date 04102200).
(.010” Oversize)
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
∅Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−8Assemblies include all parts shown in frames. 07/09/2008
8
26 795431 Ring Set
(Standard)
(Used After Code Date
07090300).
−−−−−−− Note −−−−−
791098 Ring Set
(Standard)
(Used After Code Date
04031400 and Before
Code Date 07090400).
499425 Ring Set
(Standard)
(Used Before Code
Date 04031500).
795432 Ring Set
(.020” Oversize)
(Used After Code Date
07090300).
791324 Ring Set
(.020” Oversize)
(Used After Code Date
04102100 and Before
Code Date 07090400).
499427 Ring Set
(.020” Oversize)
(Used Before Code
Date 04102200).
28 499423 Pin−Piston
(Standard)
29 499424 Rod−Connecting
(Standard)
32 691664 Screw
(Connecting Rod)
32A 695759 Screw
(Connecting Rod)
33 262651S Valve−Exhaust
34 262652S Valve−Intake
35 691270 Spring−Valve
(Intake)
36 691270 Spring−Valve
(Exhaust)
37 694086 Guard−Flywheel
40 692194 Retainer−Valve
43 691997 Slinger−Governor/Oil
45 690548 Tappet−Valve
46 691449 Camshaft
50 497465 Manifold−Intake
51 K272199S Gasket−Intake
54 691650 Screw
(Intake Manifold)
55 691421 Housing−Rewind
Starter
58 697316 Rope−Starter
(Cut To Required
Length)
60 281434S Grip−Starter Rope
65 690837 Screw
(Rewind Starter)
78 691108 Screw
(Flywheel Guard)
81 691740 Lock−Muffler Screw
95 691636 Screw
(Throttle Valve)
97 493267 Shaft−Throttle
(Metal)
−−−−−−− Note −−−−−
696565 Shaft−Throttle
(Plastic)
104 D691242 Pin−Float Hinge
108 691182 Valve−Choke
108A 795935 Valve−Choke
(Used After Code Date
08031200).
−−−−−−− Note −−−−−
790844 Valve−Choke
(Used Before Code
Date 08031300).
109A 498593 Shaft−Choke
109B 795936 Shaft−Choke
(Used After Code Date
08031200).
−−−−−−− Note −−−−−
790843 Shaft−Choke
(Used Before Code
Date 08031300).
117 498978 Jet−Main
(Standard)
−−−−−−− Note −−−−−
494870 Jet−Main
(Standard)
Used on Type No(s).
0336, 0515, 0518,
0525, 0560, 0562,
0563, 0666, 0717,
1027, 3717.
117A 498978 Jet−Main
(Standard)
−−−−−−− Note −−−−−
498981 Jet−Main
(Standard)
Used on Type No(s).
0005, 0113, 0130,
0131, 0134, 0137,
0138, 0236, 0238,
0240, 0269, 0332,
0509.
117B 697355 Jet−Main
(Standard)
118 497466 Jet−Main
(High Altitude)
−−−−−−− Note −−−−−
497315 Jet−Main
(High Altitude)
Used on Type No(s).
0336, 0515, 0518,
0525, 0560, 0562,
0563, 0666, 0717,
1027, 3717.
118A 497466 Jet−Main
(High Altitude)
−−−−−−− Note −−−−−
494870 Jet−Main
(High Altitude)
Used on Type No(s).
0005, 0113, 0130,
0131, 0134, 0137,
0138, 0236, 0238,
0240, 0269, 0332,
0509.
118B 692677 Jet−Main
(High Altitude)
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
∅Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−9Assemblies include all parts shown in frames. 07/09/2008
9
121 498260 Kit−Carburetor
Overhaul
125 498170 Carburetor
(Primer System)
−−−−−−− Note −−−−−
790821 Carburetor
(Primer System)
Used on Type No(s).
0336, 0515, 0518,
0525, 0560, 0562,
0563, 0666, 0717,
1027, 3717.
125A 499059 Carburetor
(Choke System)
−−−−−−− Note −−−−−
792253 Carburetor
(Choke System)
Used on Type No(s).
0005, 0113, 0130,
0131, 0134, 0137,
0138, 0236, 0238,
0240, 0269, 0332,
0509.
125B 790845 Carburetor
(Autochoke System)
127 D694468 Plug−Welch
130 696564 Valve−Throttle
130A 691203 Valve−Throttle
133 398187 Float−Carburetor
134 D398188 Kit−Needle/Seat
137 Dz693981 Gasket−Float Bowl
146 690979 Key−Timing
159 691753 Bracket−Air Cleaner
Primer
163KDz272653 Gasket−Air Cleaner
187 791766 Line−Fuel
(Cut to Required
Length)
187A 791873 Line−Fuel
(Molded)
187B 791891 Line−Fuel
(Includes Filter)
(Used After Code Date
05063000).
−−−−−−− Note −−−−−
692042 Line−Fuel
(Includes Filter)
(Used Before Code
Date 05070100).
187C 791875 Line−Fuel
(Molded)
188 693399 Screw
(Control Bracket)
190 690940 Screw
(Fuel Tank)
202 691829 Link−Mechanical
Governor
209B 699056 Spring−Governor
−−−−−−− Note −−−−−
691292 Spring−
Governor
Used on Type No(s).
0114, 0116, 0117,
0125, 0237, 0243,
0277, 0301, 0302,
0307, 0311, 0337,
0338, 0347, 0424,
0425, 0438, 0440,
0484, 0490, 0511,
0513.
691851 Spring−
Governor
Used on Type No(s).
0119, 0122, 0123,
0124, 0135, 0141,
0153, 0154, 0156.
691852 Spring−
Governor
Used on Type No(s).
0121,0142.
691290 Spring−
Governor
Used on Type No(s).
0005, 0134, 0138,
0145, 0236, 0269.
691291 Spring−
Governor
Used on Type No(s).
0113, 0126, 0130,
0131, 0132, 0137,
0240, 0332, 0509.
790944 Spring−
Governor
Used on Type No(s).
0238.
222 790143 Bracket−Control
(Remote/Manual
Friction)(Primer)
222C 692150 Bracket−Control
(Variable Speed)
(5 Postion Manual
Choke)
222E 692982 Bracket−Control
(Manual Friction, 5
Postion Manual
Choke)
222D 692467 Bracket−Control
(Fixed Speed)
−−−−−−− Note −−−−−
791128 Bracket−
Control
(Fixed Speed)
Used on Type No(s).
0145, 0154, 0478,
0479, 0481, 0576,
0582, 0587, 0589,
0592, 0609, 0611,
0613, 0618, 0630,
0631, 0639, 0657,
0664, 0665, 0666,
0674, 0717, 0887,
1027, 3717.
227 690783 Lever−Governor
Control
231 691636 Screw
(Choke Valve)
236 691826 Link−Lockout
240 298090S Filter−Fuel
265 690798 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)
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
∅Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION

123K00
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5054−10 Assemblies include all parts shown in frames. 07/09/2008
10
271 691028 Lever−Control
276 Dz271716 Washer−Sealing
(Main Jet)
287 690940 Screw
(Dipstick Tube)
291 790830 Thermostat
300 692038 Muffler
−−−−−−− Note −−−−−
790828 Muffler
Used on Type No(s).
0478, 0479, 0481,
0592, 0611, 0615,
0625, 0630, 0664,
0665, 0674, 0887.
300B 694048 Muffler
(Super Lo Tone
Catalyst)
304 695892 Housing−Blower
−−−−−−− Note −−−−−
493293 Housing−
Blower
Used on Type No(s).
0015, 0018, 0025,
0060, 0062, 0107,
0113, 0114, 0117,
0120, 0127, 0130,
0131, 0132, 0134,
0138, 0147, 0153,
0184, 0210, 0218,
0223, 0225, 0302,
0330, 0515, 0518,
0525, 0560, 0562,
0587, 0589, 0611,
0717, 3717.
493294 Housing−
Blower
Used on Type No(s).
0005, 0126, 0134,
0137, 0156, 0236,
0238, 0240, 0269,
0332, 0509.
696298 Housing−
Blower
Used on Type No(s).
0121, 0194, 0244.
790826 Housing−
Blower
Used on Type No(s).
0479, 0481, 0592,
0615, 0625, 0630,
0664, 0665, 0887.
790983 Housing−
Blower
Used on Type No(s).
0478, 0674.
694092 Housing−
Blower
Used on Type No(s).
0145.
305 691108 Screw
(Blower Housing)
306 690450 Shield−Cylinder
306A 790836 Shield−Cylinder
307 690345 Screw
309 695550 Motor−Starter
(Used Before Code
Date 07052900).
309A 795092 Motor−Starter
(Used After Code Date
07052800).
(Cylinder Shield)
310 692327 Bolt
(Starter Motor)
332 690662 Nut
(Flywheel)
333 802574 Armature−Magneto
−−−−−−− Note −−−−−
790817 Armature−
Magneto
Used on Type No(s).
0336, 0515, 0518,
0525, 0560, 0562,
0563, 0615, 0625,
0666, 0717, 1027,
3717.
333A 793353 Armature−Magneto
334 691061 Screw
(Magneto Armature)
337 802592S Plug−Spark
(Resistor)
−−−−−−− Note −−−−−
697451 Plug−Spark
(EMS)
347 691396 Switch−Rocker
356 692390 Wire−Stop
356B 693010 Wire−Stop
356D 496381 Wire−Stop
358 497316 Gasket Set−Engine
363 19069 Flywheel Puller
365 691688 Screw
(Carburetor)
383 89838S Wrench−Spark Plug
404 690272 Washer
(Governor Crank)
425A 690670 Screw
(Air Cleaner Cover)
443A 692523 Screw
(Air Cleaner Primer
Base)
445A 491588S Filter−Air Cleaner
Cartridge
KIncluded in Engine Gasket Set−Ref. No.358.
DIncluded in Carburetor Overhaul Kit−Ref. No. 121.
zIncluded in Carburetor Gasket Set−Ref. No. 977.
∅Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION