| Item | Part No. | Part Name | Qty | Serial No. |
| 203-70-00151 | BOOM ASS'Y | 21100- | ||
| 203-70-00150 | BOOM ASS'Y | 18001-21099 | ||
| 1 | \6\ | BOOM | 21100- | |
| 1 | \6\ | BOOM | 18001-21099 | |
| 2 | 203-70-41411 | BUSHING | 21100- | |
| 2 | \0\203-70-41410 | BUSHING | 18001-21099 | |
| 3 | 07020-00675 | FITTING,GREASE | 18001- | |
| 4 | 07145-00070 | SEAL,DUST | 18001- | |
| 5 | 203-70-41450 | PIN | 18001- | |
| 6 | 205-70-66580 | PLATE | 18001- | |
| 7 | 01010-51230 | BOLT | 18001- | |
| 8 | 01643-31232 | WASHER | 18001- | |
| 9 | 203-70-11220 | SPACER, 2.0MM | 18001- | |
| 10 | 203-70-11210 | SPACER, 1.0MM | 18001- | |
| 11 | 203-70-34270 | SPACER, 0.5MM | 18001- | |
| 12 | 203-70-41380 | PIN | 18001- | |
| 13 | 21K-70-11410 | PLATE | 18001- | |
| 14 | 01019-11640 | BOLT | 18001- | |
| 15 | 01580-11613 | NUT | 18001- | |
| 16 | 203-70-41391 | PIN | 21100- | |
| 16 | \0\203-70-41390 | PIN | 18001-21099 | |
| 17 | 205-70-66580 | PLATE | 18001- | |
| 18 | 01010-51230 | BOLT | 18001- | |
| 19 | 01643-31232 | WASHER | 18001- | |
| 20 | 203-70-24170 | SPACER, 1.0MM | 18001- | |
| 21 | 203-70-41430 | SPACER, 2.0MM | 18001- | |
| 22 | 203-70-41192 | PIN | 21100- | |
| 22 | \0\203-70-41191 | PIN | 18001-21099 | |
| 23 | 205-70-66580 | PLATE | 18001- | |
| 24 | 01010-51230 | BOLT | 18001- | |
| 25 | 01643-31232 | WASHER | 18001- | |
| 26 | 203-70-24170 | SPACER, 1.0MM | 18001- | |
| 27 | 07214-60610 | CONNECTOR | 18001- | |
| 28 | 07020-00675 | FITTING,GREASE | 18001- | |
| 29 | 202-70-11410 | TUBE | 18001- | |
| 30 | 203-70-41311 | PIN | 21100- | |
| 30 | \0\203-70-41310 | PIN | 18001-21099 | |
| 31 | 205-70-66580 | PLATE | 18001- | |
| 32 | 01010-51230 | BOLT | 18001- | |
| 33 | 01643-31232 | WASHER | 18001- | |
| 34 | 203-70-11210 | SPACER, 1.0MM | 18001- | |
| 35 | 203-70-34270 | SPACER, 0.5MM | 18001- |