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26- ENG
D30339
REPAIR PARTS
★ Included in Engine Gasket Set–See Ref. No. 358.
✦ Included in Carburetor Overhaul Kit–See Ref. No. 121.
● Included in Carburetor Gasket Set–See Ref. No. 977.
Assemblies include all parts shown in frames.
Briggs & Stratton Engine Model Number 128812-3112-D2
Key# Part# Description
16 691455 Crankshaft
24 222698 Key–Flywheel
25 499429 Piston Assembly
(Standard)
––––––– Note –––––
499430 Piston Assembly
(.010” Oversize)
499431 Piston Assembly
(.020” Oversize)
499432 Piston Assembly
(.030” Oversize)
26 499425 Ring Set (Standard)
––––––– Note –––––
499426 Ring Set
(.010” Oversize)
499427 Ring Set
(.020” Oversize)
499428 Ring Set
(.030” Oversize)
27 691866 Lock–Piston Pin
28 499423 Pin–Piston (Standard)
––––––– Note –––––
29 499424 Rod–Connecting
(Standard)
32 691664 Screw
(Connecting Rod)
32A 695759 Screw
(Connecting Rod)
33 262651 Valve–Exhaust
34 262652 Valve–Intake
35 691270 Spring–Valve (Intake)
36 691270 Spring–Valve
(Exhaust)
40 692194 Retainer–Valve
45 690548 Tappet–Valve
146 690979 Key–Timing
741 691830 Gear–Timing
25
29
28
16
24
741
146
26
27
27
32
32A
45
45
40
40
35
36
34
33
Key# Part# Description