| Item | Part No. | Part Name | Qty | Serial No. |
| YM114250-11951 | HEAD COVER ASS'Y | 00100- | ||
| 1 | \6\ | COVER | 00100- | |
| YM114250-03591 | DECOMPRESSION ASS'Y | 00100- | ||
| 2 | \6\ | SHAFT | 00100- | |
| 3 | \6\ | LEVER | 00100- | |
| 4 | YM114250-03640 | SPRING | 00100- | |
| 5 | YM22312-030160 | PIN | 00100- | |
| 6 | \6\ | PLUG | 00100- | |
| 7 | \6\ | BREATHER | 00100- | |
| 8 | \6\ | O-RING | 00100- | |
| 9 | YM129100-61850 | PLUG | 00100- | |
| 10 | YM114250-11310 | PACKING (KIT) | 00100- | |
| 11 | YM26106-060552 | BOLT | 00100- |