| Item | Part No. | Part Name | Qty | Serial No. |
| ENGINE, SERVICE (SEE FIG. A0000-01A00) | ||||
| 1 | YM129900-07900 | LIFT, ENGINE | ||
| 2 | YM26106-080162 | BOLT | ||
| 3 | YM123907-11550 | SEAT | ||
| YM129907-11700 | HEAD, CYLINDER | |||
| 4 | (NSS) | HEAD | ||
| 5 | YM129908-11160 | GUIDE, VALVE | ||
| 6 | YM123907-11820 | STUD | ||
| 7 | YM23876-020000 | PLUG | ||
| 8 | YM23876-030000 | PLUG | ||
| 9 | YM27241-400000 | PLUG | ||
| 10 | YM129907-11110 | VALVE, EXHAUST | ||
| 11 | YM129907-11120 | SPRING, VALVE | ||
| 12 | YM119620-11180 | RETAINER, SPRING | ||
| 13 | YM124160-11340 | SEAL, VALVE INTAKE | ||
| 14 | YM124950-11340 | SEAL, VALVE EXHAUST | ||
| YM129907-11510 | RETAINER, VALVE | |||
| 15 | (NSS) | RETAINER | ||
| 16 | YM129150-11750 | NUT | ||
| 17 | YM123907-11830 | SCREW | ||
| 18 | YM27310-070001 | COLLET | ||
| 19 | YM129907-11100 | VALVE, INTAKE | ||
| 20 | YM24311-000120 | O-RING | ||
| 21 | YM119625-11870 | PROTECTOR | ||
| 22 | YM119625-11880 | SEAT | ||
| 23 | BOLT, HEAD (SEE FIG. A0004-01A00) |