ENGINE, Briggs and Stratton, 121012 – Parts List
Item
Part #
Description
1
699510
Cylinder Assembly
2
399269
Kit-Bushing/Seal (Magneto Side)
3
299819S
£ Oil Seal (Magneto Side)
5
699486
Head-Cylinder
7
698210
£ † Gasket-Cylinder Head
11
692600
Tube-Breather
12
699485
£ Gasket-Crankcase
13
699482
Screw (Cylinder Head)
15
691686
Plug-Oil Drain
15A
691682
Plug-Oil Drain
16
699445
Crankshaft
18
699804
Cover-Crankcase
20
692550
£ Seal-Oil (PTO Side)
21
281658S
Cap-Oil Fill
22
699478
Screw (Crankcase Cover)
23
699488
Flywheel
24
222698S
Key-Flywheel
25
791097
Piston Assembly (Standard)
791326
Piston Assembly (.020" Oversize)
26
791969
Ring Set (Standard)
791324
Ring Set (.020" Oversize)
27
691866
Lock-Piston Pin
28
499423
Pin-Piston
29
690124
Rod-Connecting
30
692562
Dipper-Connecting Rod
32
691664
Screw (Connecting Rod)
32A
695759
Screw (Connecting Rod)
33
499642
Valve-Exhaust
34
499641
Valve-Intake
35
691304
Spring-Valve (Intake)
36
691304
Spring-Valve (Exhaust)
40
692194
Retainer-Valve
45
690977
Tappet-Valve
46
693404
Camshaft
51
692555
¥ £ ‡ † Gasket-Intake (2 Required)
55
691422
Housing-Rewind Starter
58
693389
Rope-Starter
60
691915
Starter Rope Grip
65
699228
Screw (Rewind Starter)
95
691636
Screw (Throttle Valve)
97
690024
Throttle Shaft
98
398185
Kit-Idle Speed
104
691242
Pin-Float Hinge
108
692567
Valve-Choke
109
690023
Shaft-Choke
117
690048
Jet-Main (Standard)
118
498976
Jet-Main (High Altitude)
121
792006
Kit-Carburetor Overhaul
122
693749
Spacer-Carburetor
125
698474
Carburetor
127
691739
¥ Plug-Welch
130
691181
Valve-Throttle
133
398187
Float-Carburetor
134
398188
¥ Valve-Float Needle
137
693981
¥ ‡ Gasket-Float Bowl
146
690979
Key-Timing
155
698214
Plate-Cylinder Head
161
699207
Base-Air Cleaner
163
696024
¥ £ ‡ Gasket-Air Cleaner
186
692317
Connector-Hose
187
791766
Line-Fuel (Cut to Required Length)
187A
791867
Line-Fuel (Molded)
188
699479
Screw (Control Bracket)
190
699220
Screw (Fuel Tank)
192
694543
Ball-Rocker Arm
209
691278
Spring-Governor
209A
692571
Spring-Governor
219
693578
Gear-Governor
220
691724
Washer (Governor Gear)
222
793108
Bracket-Control
227
692573
Lever-Governor Control
238
691300
Cap-Valve
271
695743
Lever-Control
276
271716
¥ Washer-Sealing
281
793122
Panel-Control
300
693593
Muffler
Item
Part #
Description
304
699598
Housing-Blower
305
699480
Screw (Blower Housing)
306
693610
Shield-Cylinder
307
699483
Screw (Cylinder Shield)
332
792723
Nut (Flywheel)
333
695711
Armature-Magneto
334
699477
Screw (Magneto Armature)
337
491055S
Plug-Spark
356
692390
Stop Wire
358
791797
Gasket Set-Engine
365
699484
Screw (Carburetor)
415
693463
Plug
425
699208
Screw (Air Cleaner Cover)
427
694255
Nut (Control Bracket)
445
491588S
Filter-A/C Cartridge
455
692591
Cup-Flywheel
456
692299
Plate-Pawl Friction
459
281505S
Pawl-Ratchet
504
694254
Washer Set-Friction
505
691251
Nut (Governor Control Lever)
552
692346
Bushing-Governor Crank
562
691112
Bolt (Governor Control Lever)
597
691696
Screw (Pawl Friction Plate)
601
791850
Clamp-Hose
608
699394
Starter-Rewind
613
791972
Screw (Muffler)
615
692576
Retainer-Governor Shaft
616
692547
Crank-Governor
619
699480
Screw (Cylinder Head Plate)
621
692310
Switch-Stop
632
693408
Spring/Link –Mechanical Governor
633
693867
¥ ‡ Seal-Choke/Throttle Shaft
633A
691321
¥ ‡ Seal-Choke/Throttle Shaft
635
692076
Boot-Spark Plug
663
699206
Screw (Control Panel)
668
694257
Spacer
689
691855
Spring-Friction
692
690572
Spring-Detent
718
690959
Pin-Locating
741
695087
Gear-Timing
742
692564
Ring-Retaining
746
790278
Gear-Idler
773
694258
Retainer
830
694544
Stud (Rocker Arm)
832
693583
Guard-Muffler
836
699632
Screw (Muffler Guard)
836A
699203
Screw (Muffler Guard)
851
493880S
Terminal-Spark Plug
868
692044
£ † Seal-Valve
883
691893
£ Gasket-Exhaust
914
699480
Screw (Rocker Cover) (Bottom)
914A
692557
Screw (Rocker Cover) (Top)
914B
697551
Screw (Rocker Cover) (Sides)
957
792647
Cap-Fuel Tank
958
698180
Valve-Fuel Shut Off
968
692584
Cover-Air Cleaner
971
690370
Screw (Air Cleaner Base)
972
694260
Tank-Fuel
975
493640
Bowl-Float
977
697001
Gasket Set-Carburetor
993
694088
£ † Gasket-Cylinder Head Plate
1005
692592
Fan-Flywheel
1022
691890
£ † Gasket-Rocker Cover
1023
499924
Cover-Rocker
1026
790287
Rod-Push
1029
691230
Rocker Arm
1034
691343
Guide-Push Rod
1095
791798
Gasket Set-Valve
1070
699201
Screw (Flywheel)
1210
498144
Pulley/Spring Assembly (Pulley)
1211
498144
Pulley/Spring Assembly (Spring)
£
Included in Engine Gasket Set, Item 358
¥
Included in Carburetor Overhaul Kit, Item 121
‡
Included in Carburetor Gasket Set, Item 977
†
Included in Valve Gasket Set, Item 1095
31