| Item | Part No. | Part Name | Qty | Serial No. |
| 6221-11-1200 | CYLINDER HEAD ASS'Y,VALVE LESS | | 11731- |
| 1 | \6\ | HEAD,CYLINDER | | 11731- |
| 2 | 07046-41810 | PLUG | | 11731- |
| 3 | 6221-11-1330 | SEAT,INTAKE VALVE (STD) | | 11731- |
| 3 | 6221-19-1330 | SEAT, 0.25MM,INTAKE VALVE (OS) | | 11731- |
| 3 | 6221-18-1330 | SEAT, 0.50MM,INTAKE VALVE (OS) | | 11731- |
| 3 | 6221-17-1330 | SEAT, 0.75MM,INTAKE VALVE (OS) | | 11731- |
| 3 | 6221-16-1330 | SEAT, 1.00MM,INTAKE VALVE (OS) | | 11731- |
| 4 | 6221-11-1320 | SEAT,EXHAUST VALVE (STD) | | 11731- |
| 4 | 6221-19-1320 | SEAT, 0.25MM,EXHAUST VALVE (OS) | | 11731- |
| 4 | 6221-18-1320 | SEAT, 0.50MM,EXHAUST VALVE (OS) | | 11731- |
| 4 | 6221-17-1320 | SEAT, 0.75MM,EXHAUST VALVE (OS) | | 11731- |
| 4 | 6221-16-1320 | SEAT, 1.00MM,EXHAUST VALVE (OS) | | 11731- |
| 5 | 6221-19-1311 | GUIDE,VALVE | | 11731- |
| 6 | 07046-42816 | PLUG | | 11731- |
| 7 | 07046-44016 | PLUG | | 11731- |
| 8 | 07043-70108 | PLUG | | 11731- |
| 9 | 07043-70108 | PLUG | | 11731- |
| 10 | 6221-41-4110 | VALVE,INTAKE | | 11731- |
| 11 | 6221-41-4210 | VALVE,EXHAUST | | 11731- |
| 12 | 6221-41-4410 | SPRING,VALVE | | 11731- |
| 13 | 6221-41-4510 | GUIDE,SPRING | | 11731- |
| 14 | 6136-42-4520 | COTTER,VALVE | | 11731- |
| 15 | 6140-41-4540 | SEAL,EXHAUST VALVE (K1) | | 11731- |
| 16 | 6221-11-1811 | GASKET,HEAD (K1) | | 11731- |
| 17 | 6221-11-1610 | BOLT,HEAD | | 11731- |
| 18 | 6136-11-1970 | HANGER,REAR | | 11731- |
| 19 | 01435-01020 | BOLT | | 11731- |
