| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 21U-70-00010 | BOOM ASS'Y,1ST | 1001- | |
| 1 | \6\ | BOOM,1ST | 1001- | |
| 1 | 21U-942-1110 | BOOM,(KISO KUTSUSAKU SPEC.) | 5336- | |
| 2 | 20C-70-11140 | BUSHING | 1001- | |
| 2 | (\2\07144-10404) | BUSHING | (1001-.) | |
| 3 | 07145-00040 | SEAL,DUST | 1001- | |
| 4 | 21U-70-11155 | PIN | 3653- | |
| 4 | 21U-70-11150 | PIN | 1001-3652 | |
| 5 | 07020-00675 | FITTING,GREASE | 1001- | |
| 6 | 01010-51225 | BOLT | 1001- | |
| 7 | 01643-31232 | WASHER | 1001- | |
| 8 | 20R-70-11250 | PLATE | 3653- | |
| 9 | 21U-70-11170 | PIN | 1001- | |
| 10 | 21U-70-11180 | PIN | 1001- | |
| 11 | 21U-70-11740 | SPACER, 1.0MM | 2026- | |
| 11 | 20R-70-11260 | SPACER, 1.0MM | 1001-2025 | |
| 12 | 07020-00000 | FITTING,GREASE | 1001- | |
| 13 | 01010-51225 | BOLT | 1001- | |
| 14 | 01643-31232 | WASHER | 1001- |