| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | YM729157-01560 | CYLINDER BLOCK ASS'Y | 18428- | |
| 2 | YM124160-01910 | PLUG | 18428- | |
| 3 | YM23871-010000 | PLUG | 18428- | |
| 4 | YM171051-01921 | PLUG | 18428- | |
| 5 | YM27231-500000 | PLUG | 18428- | |
| 6 | YM27241-120000 | PLUG | 18428- | |
| 7 | YM27241-300000 | PLUG | 18428- | |
| 8 | YM129795-02411 | BUSHING | 18428- | |
| 9 | YM129150-02800 | MAIN METAL ASS'Y (STD) | 18428- | |
| 9 | YM129150-02870 | MAIN METAL ASS'Y,0.25MM (US) | 18428- | |
| 10 | YM129150-02930 | THRUST METAL ASS'Y (STD) | 18428- | |
| 10 | YM129150-02940 | THRUST METAL ASS'Y,0.25MM (OS) | 18428- | |
| 11 | YM129150-02020 | BOLT | 18428- | |
| 12 | YM121520-34810 | GUIDE | 18428- | |
| 13 | YM129136-34800 | GAUGE,LEVEL | 18428- | |
| 14 | YM171056-49120 | PLUG,DRAIN | 18428- | |
| 15 | YM129136-35130 | PLATE | 18428- |