| Item | Part No. | Part Name | Qty | Serial No. |
| YM121450-22091 | PISTON ASS'Y | 01181- | ||
| YM121450-22090 | PISTON ASS'Y | 01001-01180 | ||
| 1 | YM121450-22021 | PISTON | 01181- | |
| 1 | YM121450-22020 | PISTON | 01001-01180 | |
| YM721450-22500 | PISTON RING ASS'Y | 01001- | ||
| 2 | YM121450-22110 | RING,TOP | 01001- | |
| 3 | YM121450-22100 | RING,SECOND | 01001- | |
| 4 | YM121450-22200 | RING,OIL | 01001- | |
| 5 | YM121450-22210 | EXPANDER | 01001- | |
| 6 | YM105225-22300 | PIN,PISTON | 01001- | |
| 7 | YM105225-22400 | RING | 01001- | |
| YM705311-23100 | CONNECTING ROD A. | 01001- | ||
| 8 | \6\ | ROD | 01001- | |
| 9 | YM105225-23180 | BUSHING | .- | |
| 9 | \0\YM105225-23100 | METAL | 01001-. | |
| 10 | YM705311-23600 | METAL ASS'Y | 01001- | |
| 10 | \6\ | METAL | 01001- | |
| 11 | YM105225-23200 | BOLT | 01001- |