| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | YM729102-11700 | CYLINDER HEAD ASS'Y | 25470- | |
| 2 | YM121850-11860 | PLUG | 25470- | |
| 3 | YM23871-030000 | PLUG | 25470- | |
| 4 | YM27241-220000 | PLUG | 25470- | |
| 5 | YM27241-400000 | PLUG | 25470- | |
| 6 | YM129100-11100 | VALVE,INTAKE | 25470- | |
| 7 | YM129100-11110 | VALVE,EXHAUST | 25470- | |
| 8 | YM124460-11340 | SEAL,VALVE, INTAKE | 25470- | |
| 9 | YM121400-11340 | SEAL,VALVE, EXHAUST | 25470- | |
| 10 | YM129795-11120 | SPRING | 25470- | |
| 11 | YM129795-11180 | SEAT,SPRING | 25470- | |
| 12 | YM103338-11190 | COTTER,VALVE | 25470- | |
| 13 | YM129150-11370 | CAP | 25470- | |
| 14 | YM26216-060202 | STUD | 25470- | |
| 15 | YM26366-060002 | NUT | 25470- | |
| 16 | YM22351-060012 | PIN,SPRING | 25470- | |
| 17 | YM120130-11860 | GUIDE,INTAKE VALVE | 25470- | |
| 18 | YM129150-11810 | GUIDE,EXHAUST VALVE | 25470- | |
| 19 | YM129157-01332 | GASKET,HEAD (KIT) | 25470- | |
| 20 | YM129150-01200 | BOLT,HEAD | 25470- | |
| 21 | YM124736-07900 | HOOK | 25470- | |
| 22 | YM26106-080142 | BOLT | 25470- |