FORM MS−3593−10/30/2007
REPLACES FORM MS−3593−06/11/2007
FILE IN SECT. 2 OF3SE1RVNICE8MA0NU0AL
Illustrated Parts List
Model Series
31N800
TYPE NUMBERS
.0440.
TABLE OF CONTENTS
Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . 5
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Blower Housing . . . . . . . . . . . . . . . . . . . . . 5
Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Carburetor . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . 2
Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Cylinder Head . . . . . . . . . . . . . . . . . . . . . . 3
Electric Starter . . . . . . . . . . . . . . . . . . . . . . 7
Engine Sump . . . . . . . . . . . . . . . . . . . . . . . 2
Flywheel . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fuel Supply . . . . . . . . . . . . . . . . . . . . . . . . . 5
Gasket Set − Engine . . . . . . . . . . . . . . . . . 2
Gasket Set − Valve . . . . . . . . . . . . . . . . . . 3
Governor Spring . . . . . . . . . . . . . . . . . . . . 7
Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Kit − Carburetor Overhaul . . . . . . . . . . . . 4
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operator’s Manual . . . . . . . . . . . . . . . . . . 2
Piston, Rings, Connecting Rod . . . . . . . 2
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warning Label . . . . . . . . . . . . . . . . . . . . . . 2
PRINTED IN U.S.A.
COPYRIGHT by BRIGGS & STRATTON CORPORATION
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.
31N800
847
523
842
1095 VALVE GASKET SET
51
7
1022
525
868
524
5
33
34
868
42
42
45
13
238
1026
36
7
337
51
35
635
383
1022
617
1034
830
192
1029
51
50
617
54
53
654
1022
914
850A
1023
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
3593−3
Assemblies include all parts shown in frames.
10/30/2007
3
31N800
125A
141B
634B
131A
117A
108B
130A
95A
987A
98A
118A
94A
51
105A
104A
127A
133A
975A
135
137A
137A
276A
NIKKI
1127
947A
121ACARBURETOR OVERHAUL KIT
617
127A
51
634B
137A
95A
104A
105A
987A
240A
387
385A
187B
918
387A
601
601
385
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
3593−4
Assemblies include all parts shown in frames.
10/30/2007
4
31N800
1040
304
1267
968
305A
643
967
445
305
1036 EMISSIONS LABEL
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
3593−5
Assemblies include all parts shown in frames.
10/30/2007
5
31N800
74
73
415A
1005A
78
37
73A
1070A
1070
1005
1005B
1044
363
23
1051
783
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
3593−6
Assemblies include all parts shown in frames.
10/30/2007
6
31N800
TRI
CIRCUIT
474B
877B
1059
878A
526
501
1119
mounting screw.
NOTE: All stators use a No.
NOTE: The proper flywheel part number and/or the alternator magnet size will
determinethe alternator type or output. See repair instruction manual
for additional information.
334
789A
333
851
309
801
544
1051
729A
697
510
783
513
310
521
803
1054
1090
311
356
503
462
579
797
802
227
562
616
505
404
614
202
188
216
222
209
232
265
559
268
269
267
270
271
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
3593−7
Assemblies include all parts shown in frames.
10/30/2007
7
31N800
REF.
NO.
PART
NO.
REF.
NO.
PART
NO.
REF.
NO.
PART
NO.
DESCRIPTION
DESCRIPTION
DESCRIPTION
1
2
793987 Cylinder Assembly
399265 Kit−Bushing/Seal
(Magneto Side)
29
791631 Rod−Connecting
(Standard)
791934 Valve−Exhaust
791935 Valve−Intake
691279 Spring−Valve
(Intake)
691279 Spring−Valve
(Exhaust)
697352 Guard−Flywheel
499586 Keeper−Valve
691968 Slinger−Governor/Oil
690564 Tappet−Valve
793880 Camshaft
127A D690727 Plug−Welch
130A
131A
133A
135
699500 Valve−Throttle
33
34
35
699501 Kit−Throttle Shaft
694914 Float−Carburetor
792022 Tube−Fuel Transfer
3 K391086s Seal−Oil
(Magneto Side)
697106 Sump−Engine
793989 Head−Cylinder
4
5
137A D698781 Gasket−Float Bowl
36
141B
146
187B
698778 Kit−Choke Shaft
691639 Key−Timing
791805 Line−Fuel
(Formed)(10−1/4
7 KΔ699168 Gasket−Cylinder Head
9
37
42
43
45
46
50
K697109 Gasket−Breather
(Used Before Code
Date 07072400).
Inches Long)(Cut to
Required Length)
691693 Screw
10
11
697157 Screw
(Breather Assembly)
794683 Tube−Breather
(Used After Code Date
07071800).
188
690193 Manifold−Intake
(Control Bracket)
51KΔD692137 Gasket−Intake
192
202
691986 Adjuster−Rocker Arm
691841 Link−Mechanical
Governor
53
54
73
690227 Stud
(Carburetor)
691148 Screw
(Intake Manifold)
−−−−−− Note −−−−−−
697113 Tube−Breather
(Used Before Code
Date 07071900).
209
216
222
227
692208 Spring−Governor
691840 Link−Choke
694042 Bracket−Control
691374 Lever−Governor
Control
Screen−Rotating
(Service With Flywheel
Fan 794436)
(Used Before Code
Date 07040900).
12 K697110 Gasket−Crankcase
(.015”Thick)(Standard)
793988 Screw
(Cylinder Head)
13
232
238
240A
691842 Spring−Governor Link
691843 Cap−Valve
691035 Filter−Fuel
(Includes Paper
73A
74
794437 Screen−Rotating
(Used After Code Date
07011400).
−−−−−− Note −−−−−−
690360 Screw
(Cylinder Head)
(Used Before Code
Date 07011500).
(Cylinder Head)
(Used After Code Date
07040800).
697897 Screw
Element With A 40
Micron Rating)
691024 Clamp−Casing
792629 Screw
(Rotating Screen)
(Used Before Code
Date 07040900).
265
267
(Casing Clamp)
78
691003 Screw
(Flywheel Guard)
695425 Kit−Idle Mixture
268
269
270
691025 Casing−Control Wire
(Cut To Required
Length)
691026 Wire−Control
(Cut To Required
Length)
691027 Nut
15
16
690946 Plug−Oil Drain
(Square Head)
697127 Crankshaft
94A
95A D690718 Screw
(Throttle Valve)
695408 Kit−Idle Speed
20 K791892 Seal−Oil
98A
(PTO Side)
104A D694918 Pin−Float Hinge
105A D696136 Valve−Float Needle
108B
117A
22
692125 Screw
(Crankcase
Cover/Sump)
693556 Flywheel
(Control Wire Casing)
691028 Lever−Control
695410 Washer−Sealing
790929 Housing−Blower
(Red)
695419 Valve−Choke
699732 Jet−Main
(Standard)
843099 Jet−Main
(High Altitude)
792369 Kit−Carburetor
Overhaul
(Nikki Carburetor)
792171 Carburetor
(Nikki Carburetor)
271
276A
304
23
24 222698s Key−Flywheel
25
791937 Piston Assembly
(Standard)
118A
121A
305
697102 Screw
(Blower Housing)
793376 Screw
−−−−−− Note −−−−−−
793019 Piston
Assembly
305A
(Blower Housing)(Lift
Screw)
(.020 Oversize)
791936 Ring Set
(Standard)
125A
26
−−−−−− Note −−−−−−
792649 Ring Set
(.020 Oversize)
698469 Lock−Piston Pin
697099 Pin−Piston
(Standard)
27
28
K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121A.
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.
3593−8
Assemblies include all parts shown in frames.
10/30/2007
8
31N800
DESCRIPTION
REF.
NO.
PART
NO.
REF.
NO.
PART
NO.
REF.
NO.
PART
NO.
DESCRIPTION
DESCRIPTION
306
307
697107 Shield−Cylinder
691003 Screw
(Cylinder Shield)
693551 Motor−Starter
690323 Screw
579
691029 Nut
851
692424 Terminal−Spark Plug
868 KΔ690968 Seal−Valve
877B
(Starter Cable)
794682 Cover−Breather
Passage
393537 Wire/Connector−
Alternator
691955 Harness−Alternator
691108 Screw
584
309
310
878A
914
(Used After Code Date
07071800).
−−−−−− Note −−−−−−
697112 Cover−
Breather Passage
(Used Before Code
Date 07071900).
(Starter Motor)
311
333
334
497608 Brush Set
795315 Armature−Magneto
691061 Screw
(Rocker Cover)
918
947A
967
791851 Hose−Vacuum
699915 Solenoid−Fuel
697015 Filter−Pre Cleaner
699830 Cover−Air Cleaner
(Red)
(Magneto Armature)
337 491055S Plug−Spark
968
356
358
363
383
385
697089 Wire−Stop
794150 Gasket Set−Engine
19203 Puller−Flywheel
89838S Wrench−Spark Plug
694476 Screw
(Fuel Pump)
690297 Screw
601
614
616
791850 Clamp−Hose
691620 Pin−Cotter
692012 Crank−Governor
975A
699502 Bowl−Float
987A D698777 Seal−Throttle Shaft
1005
1005A
1005B
794438 Fan−Flywheel
617 KD692138 Seal−O Ring
(Intake Manifold)
634B D698779 Spring/Seal Assembly
635
643
654
(Used After Code Date
07040800).
794436 Fan−Flywheel
385A
691909 Boot−Spark Plug
698401 Retainer−Air Filter
690958 Nut
(Fuel Pump)
(Used Before Code
Date 07040900).
Fan−Flywheel
(No Longer Available)
(See Reference1005A
For Service Flywheel
Fan).
387
387A
404
697090 Pump−Fuel
808656 Pump−Fuel
691691 Washer
(Governor Crank)
794129 Plug
(Carburetor)
691 K692407 Seal−Governor Shaft
697
690372 Screw
(Drive Cap)
690959 Pin−Locating
415A
(Cover/Retainer)
(Used After Code Date
07040800).
718
729A
741
757
758
759
783
789A
797
1022KΔ272475s Gasket−Rocker Cover
691224 Clip−Wire
(Used Before Code
Date 07091100).
791079 Cover−Rocker
692003 Rod−Push
(Intake)
445
698083 Filter−Air Cleaner
Cartridge
(Non Washable)
691261 Washer
(Starter Cable)
697128 Gear−Timing
793242 Link−Counterweight
793763 Counterweight
697392 Pin−Counterweight
693713 Gear−Pinion
698329 Harness−Wiring
693167 Nut
(Brush Retainer)
691283 Cap−Drive
691286 Cap−End
1023
1026
462
−−−−−− Note −−−−−−
692011 Rod−Push
(Exhaust)
474B
696457 Alternator
(Tri Circuit)
501
503
505
691188 Regulator
691532 Strap−Starter
691251 Nut
(Governor Control
Lever)
693699 Drive−Starter
692024 Clutch−Drive
690581 Shield−Cable
699908 Dipstick
1029
1034
1036
691751 Arm−Rocker
690822 Guide−Push Rod
Label−Emissions
(Available From A
Briggs & Stratton
Authorized Dealer)
698368 Plate−Trim
698139 Screw
801
802
803
Housing−Starter
(Not Serviced
Separately, Order
510
513
521
523
1040
1044
Starter Motor 693551)
691095 Stud−Rocker Arm
830
(Flywheel)
842 K691031 Seal−O Ring
524 K691032 Seal−Dipstick Tube
525
526
1051
1054
1058
1059
1070
691265 Ring−Retaining
280275 Tie−Cable
276344 Operator’s Manual
698516 Kit−Screw/Washer
690372 Screw
(Dipstick Tube)
790443 Dipstick/Tube
Assembly
100100 Sealant−Liquid
(Breather)
697085 Tube−Dipstick
697088 Screw
(Regulator)
692034 Armature−Starter
697144 Bushing−Governor
Crank
697561 Screw
(Remote Choke Stop)
691119 Bolt
847
850
544
552
(Flywheel Fan)
(Used Before Code
Date 07040900).
(Used After Code Date
07071800).
100100 Sealant−Liquid
(Rocker Cover)
559
562
850A
(Used After Code Date
07091000).
(Governor Control
Lever)
K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121A.
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.
3593−9
Assemblies include all parts shown in frames.
10/30/2007
9
31N800
REF.
NO.
PART
NO.
REF.
NO.
PART
NO.
REF.
NO.
PART
NO.
DESCRIPTION
DESCRIPTION
DESCRIPTION
1070A
690363 Screw
(Used After Code Date
07040800).
691293 Retainer−Brush
690190 Gasket Set−Valve
691183 Screw
1127
695407 Screw
(Float Bowl)
697124 Reed−Breather
1267
1270
1319
697424 Latch−Blower Housing
(Red)
697156 Plug−AVS
Counterweight
794467 Label−Warningl
1263
1264
1090
1095
1119
697104 Screw
(Breather Reed)
(Alternator)
K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121A.
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.
3593−10
Assemblies include all parts shown in frames.
10/30/2007
10
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