| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 6142-11-8111 | COVER,HEAD | 31228- | |
| 2 | 6142-11-8811 | GASKET (K1) | 31228- | |
| 3 | 01252-30835 | BOLT | 31228- | |
| 4 | 6140-11-8160 | BOLT | 31228- | |
| 5 | 01602-00825 | WASHER,SPRING | 31228- | |
| 6 | 01641-20812 | WASHER | 31228- | |
| 7 | 6142-12-8340 | FILLER,OIL | 31228- | |
| 8 | 6140-11-8410 | BREATHER | 31228- | |
| 9 | 07000-03048 | O-RING (K1) | 31228- | |
| 10 | 01010-30820 | BOLT | 31228- | |
| 11 | 01602-00825 | WASHER,SPRING | 31228- |