Parts Diagram | ## | Part # | Description | Qty | Notes |
| 1 | 0332145 | Nut, damper to crank shaft | 1 | |
2 | 0308742 | Screw, crankcase head | 16 | |
3 | 0396668 | Crankcase head and bearing. assembly | 1 | |
4 | 0322575 | Seal, upper | 1 | |
5 | 0326765 | Retaining ring | 16 | |
6 | 0326741 | O-ring | 4 | |
7 | 0307480 | Key, flywheel | 1 | |
8 | 0397161 | Crank shaft assembly | 1 | |
9 | 0326749 | Seal ring | 12 | |
10 | 0326748 | Plate, lower bearing | 1 | |
11 | 0390641 | Bearing, ball | 1 | |
12 | 0393613 | Crankcase head assembly | 1 | |
13 | 0326751 | Seal | 2 | |
14 | 0332590 | Screw, lower bearing retainer | 4 | |
15 | 0332585 | Seal | 1 | |
16 | 0326047 | Ring, retaining, bearing | 1 | |
17 | 0391480 | Bearing, wrist pin | 8 | |
18 | 0394488 | Connecting rod assembly | 8 | |
19 | 0330081 | Screw, rod cap | 2 | |
20 | 0396041 | Retainer set | 8 | |
21 | 0320499 | Split sleeve, bearing | 3 | |
22 | 0394930 | Ring set, Std | 8 | |
22 | 0385663 | Ring set, .030 o. s | 8 | |
23 | 0391481 | Piston, starboard, Std | 4 | |
23 | 0391653 | Piston, starboard, .030 o. s | 4 | |
23 | 0393566 | Piston, port, Std | 4 | |
23 | 0393612 | Piston, port, .030 o. s | 4 | |
24 | 0326764 | Wrist pin | 8 | |
25 | 0331926 | Retainer, bearing head | 1 | |
26 | 0394583 | Torsional damper assembly | 1 | |
27 | 0316487 | Retainer, leads | 2 | |
28 | 0314416 | Bumper, adjust screw | 1 | |
29 | 0316286 | Screw, spark adjustment | 1 | |
30 | 0328740 | Nut, screw, spark adjustment | 1 | |
31 | 0302290 | Lock washer | 1 | |
32 | 0387041 | Retainer & needle set | 3 | |