| Item | Part No. | Part Name | Qty | Serial No. |
| 20T-70-00041 | BOOM ASS'Y | 4501- | ||
| 1 | \6\ | BOOM | 4501- | |
| 2 | 20T-70-11160 | BUSHING | 4501- | |
| 3 | 07145-00050 | SEAL,DUST | 4501- | |
| 4 | 20T-70-11120 | PIN | 4501- | |
| 5 | 20T-70-11130 | PIN | 4501- | |
| 6 | 07020-00000 | FITTING,GREASE | 4501- | |
| 7 | 01010-31640 | BOLT | 4501- | |
| 8 | 01602-01648 | WASHER,SPRING | 4501- | |
| 9 | 01643-31645 | WASHER | 4501- | |
| 10 | 201-70-22150 | SPACER, 1.0MM | 4501- |