Parts Diagram | ## | Part # | Description | Qty | Notes |
| 0436980 | 0436980 | Piston & ring assembly, Std. not shown | 3 | |
0436975 | 0436975 | Piston & ring assembly, 0.030 in. o. s. not shown | 3 | |
1 | 0435547 | Piston, Std | 1 | |
1 | 0436974 | Piston, 0.030 in. o. s | 1 | |
2 | 0436731 | Ring set, Std | 1 | |
2 | 0436732 | Ring set, 0.030 in. o. s | 1 | |
3 | 0317831 | Retaining ring | 2 | |
4 | 0553556 | Screw, crankcase head mtg | 4 | |
5 | 0395627 | Bearing & retainer kit | 3 | |
6 | 0394462 | Connecting rod assembly | 3 | |
7 | 0308186 | Screw, rod cap | 2 | |
8 | 0437088 | Retainer & needle, rod bearing | 3 | |
9 | 0322188 | Wrist pin | 3 | |
10 | 0398529 | Roller bearing assembly | 1 | |
11 | 0321895 | Seal, crank shaft | 1 | |
12 | 0313754 | O-ring, upper bearing | 1 | |
13 | 0307480 | Key, flywheel | 1 | |
14 | 0439217 | Crank shaft assembly | 1 | |
15 | 0344294 | O-ring, crank shaft sleeve | 1 | |
16 | 0344280 | Sleeve, crank shaft | 1 | |
17 | 0431987 | Bearing assembly | 1 | |
18 | 0305132 | Retaining ring | 1 | |
19 | 0308876 | O-ring, crankcase head | 1 | |
20 | 0439210 | Crankcase head assembly | 1 | |
21 | 0331103 | Seal | 1 | |
22 | 0310433 | Split sleeve, center bearing | 2 | |
23 | 0378252 | Retainer & needle assembly | 2 | |