| Item | Part No. | Part Name | Qty | Serial No. |
| 21U-70-26101 | BOOM ASS'Y | 7001- | ||
| 1 | \6\ | BOOM | 7001- | |
| 2 | 20C-70-11140 | BUSHING | 7001- | |
| 3 | 07145-00040 | SEAL,DUST | 7001- | |
| 4 | 20P-70-71131 | PIN | 7001- | |
| 5 | 20N-70-71131 | PIN | 7001- | |
| 6 | 07020-00000 | FITTING,GREASE | 7001- | |
| 7 | 20R-70-11260 | SPACER¤ 1.0MM | 7001- | |
| 8 | 20N-70-41270 | SPACER¤ 1.0MM | 7001- | |
| 9 | 01010-51230 | BOLT | 7001- | |
| 10 | 01643-31232 | WASHER | 7001- | |
| 11 | 20P-70-71140 | PIN | 7001- | |
| 12 | 20N-70-41270 | SPACER¤ 1.0MM | 7001- | |
| 13 | 20M-70-61120 | PLATE | 7001- | |
| 14 | 01010-51225 | BOLT | 7001- | |
| 15 | 01643-31232 | WASHER | 7001- |