| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | YM729106-01560 | CYLINDER BLOCK A. | 05091- | |
| 2 | YM27241-120000 | PLUG | 05091- | |
| 3 | YM129795-02411 | BUSHING | 05091- | |
| 4 | YM124160-01910 | PLUG | 05091- | |
| 5 | YM23871-010000 | PLUG | 05091- | |
| 6 | YM171051-01921 | PLUG | 05091- | |
| 7 | YM27241-300000 | PLUG | 05091- | |
| 8 | YM27231-500000 | PLUG | 05091- | |
| 9 | YM129150-02020 | BOLT | 05091- | |
| 10 | YM129150-02800 | MAIN METAL ASS'Y | 05091- | |
| 10 | YM129150-02870 | MAIN METAL ASS'Y,0.25MM (US) | 05091- | |
| 11 | YM129150-02930 | THRUST METAL ASS'Y | 05091- | |
| 11 | YM129150-02940 | THRUST METAL ASS'Y,0.25MM (OS) | 05091- | |
| 12 | YM121520-34810 | GUIDE,GAUGE | 05091- | |
| 13 | YM129403-34800 | GAUGE,OIL | 05091- | |
| YM129150-25101 | IDLER GEAR ASS'Y | 05091- | ||
| 14 | \6\ | GEAR | 05091- | |
| 15 | YM129150-25061 | BUSHING | 05091- | |
| 16 | YM129100-25061 | SHAFT | 05091- | |
| 17 | YM26106-080452 | BOLT | 05091- | |
| 18 | YM129553-39650 | NOZZLE,PISTON COOLING | 05091- | |
| 19 | YM22351-030010 | PIN,SPRING | 05091- | |
| 20 | YM129792-39410 | VALVE ASS'Y,JOINT | 05091- |