| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | YM719802-01560 | CYLINDER BLOCK ASS'Y | 00246- | |
| 2 | YM124160-01910 | PLUG | 00246- | |
| 3 | YM171051-01921 | PLUG | 00246- | |
| 4 | YM124060-01050 | PLUG | 00246- | |
| 5 | YM129001-01250 | PLUG | 00246- | |
| 6 | YM27241-120000 | PLUG | 00246- | |
| 7 | YM27241-300000 | PLUG | 00246- | |
| 8 | YM119620-02020 | BOLT | 00246- | |
| 9 | YM129795-02411 | BUSHING | 00246- | |
| 10 | YM124160-01910 | PLUG | 00246- | |
| 11 | YM719810-02980 | MAIN METAL ASS'Y (STD) | 00246- | |
| YM119810-02870 | MAIN METAL ASS'Y,0.25MM (US) | 00246- | ||
| 12 | YM119810-02930 | THRUST METAL ASS'Y (STD) | 00246- | |
| YM119810-02940 | THRUST METAL ASS'Y,0.25MM (OS) | 00246- | ||
| 13 | YM119802-01190 | SPACER | 00246- |