| Ref | Part Number | Description |
|---|---|---|
| 1 | 0437409 | PISTON ASSY., Std. This part replaces 0394461. |
| 1 | 5006702 | Pstn&Rng Kt/.030Os This part replaces 0398483. |
| 2 | 0391170 | RING SET STD. |
| 2 | 0391416 | RING SET .030 |
| 3 | 0553556 | SCREW, Housing to cylinder |
| 4 | 0317831 | Circlip |
| 5 | 0395627 | BEARING & RETAINER |
| 6 | 0394462 | CONNECTING ROD ASSY |
| 8 | 0437088 | BEARING Assy This part replaces 0388344. |
| 9 | 0322188 | WRIST PIN |
| 10 | 0390900 | ROLLER BEARING ASSY |
| 12 | 0313754 | O RING |
| 14 | 0334665 | CRANKSHAFT |
| 15 | 0310433 | SLEEVE |
| 16 | 0378252 | BEARING ASSY., Needle |
| 19 | 0308876 | O RING CRANKCASE HEAD LOWER |
| 20 | 0395820 | CRANKCASE HEAD ASSY. |