| Item | Part No. | Part Name | Qty | Serial No. |
| 6204-12-1020 | CYLINDER HEAD ASS'Y,WITH VALVE | | 19778- |
| 6204-12-1200 | CYLINDER HEAD ASS'Y,VALVE LESS | | 19778- |
| 1 | \6\ | HEAD,CYLINDER | | 19778- |
| 2 | \5\6204-19-1310 | GUIDE,VALVE | | 19778- |
| 3 | 6204-11-1440 | SEAT,EXHAUST VALVE (STD) | | 19778- |
| 3 | 6204-19-1440 | SEAT, 0.25MM,EXHAUST VALVE (OS) | | 19778- |
| 3 | 6204-18-1440 | SEAT, 0.50MM,EXHAUST VALVE (OS) | | 19778- |
| 4 | 07046-41008 | PLUG | | 19778- |
| 5 | 07046-41810 | PLUG | | 19778- |
| 6 | 07046-42216 | PLUG | | 19778- |
| 7 | 07046-42516 | PLUG | | 19778- |
| 8 | 02720-40104 | PLUG | | 19778- |
| 9 | 6204-11-8910 | PIPE,BREATHER | | 19778- |
| 10 | 6204-41-4110 | VALVE,INTAKE | | 19778- |
| 11 | 6204-41-4210 | VALVE,EXHAUST | | 19778- |
| 12 | 6204-41-4510 | SEAT,SPRING | | 19778- |
| 13 | 6204-41-4520 | COTTER | | 19778- |
| 14 | 6204-41-4431 | SPRING,VALVE | | 19778- |
| 15 | 6204-41-4540 | SEAL,VALVE (K1) | | 19778- |
| 16 | 6206-11-1930 | HANGER,FRONT | | 19778- |
| 17 | 6206-11-1920 | HANGER,REAR | | 19778- |
| 18 | 01435-01020 | BOLT | | 19778- |
| 19 | 6202-12-1810 | GASKET,HEAD (K1) | | 19778- |
| 20 | 6142-11-1611 | BOLT | | 19778- |
| 21 | 6204-12-2110 | PLUG,HOT | | 19778- |
