| Item | Part No. | Part Name | Qty | Serial No. |
| YM121400-77010 | STARTING MOTOR ASS'Y | 20425- | ||
| 1 | YMX-213061002 | ARMATURE ASS'Y | 20425- | |
| 2 | YMX-21201115 | THRUST WASHER ASS'Y | 20425- | |
| 3 | YMX-21303400 | BEARING ASS'Y | 20425- | |
| 4 | YMX-21204401 | BUSHING | 20425- | |
| 5 | YMX-213065002 | PINION ASS'Y | 20425- | |
| 6 | YMX-21301119 | PINION STOPPER A. | 20425- | |
| 7 | YMX-21309600 | GEAR CASE ASS'Y | 20425- | |
| 8 | YMX-21302601 | BUSHING | 20425- | |
| 9 | YMX-21302605 | LEVER ASS'Y | 20425- | |
| 10 | YMX-21302602 | COVER ASS'Y | 20425- | |
| 11 | YMX-213017002 | MAGNETIC SWITCH A. | 20425- | |
| 12 | YMX-22802712 | CAP | 20425- | |
| 13 | YMX-213052101 | FIELD COIL ASS'Y | 20425- | |
| 14 | YMX-21302311 | BRUSH | 20425- | |
| 15 | YMX-21142215 | SCREW | 20425- | |
| 16 | YMX-213013021 | BRUSH HOLDER ASS'Y | 20425- | |
| 17 | YMX-21308312 | BRUSH (-) | 20425- | |
| 18 | YMX-21307313 | SPRING,BRUSH | 20425- | |
| 19 | YMX-213013012 | REAR COVER ASS'Y | 20425- | |
| 20 | YMX-21304302 | BUSHING | 20425- | |
| 21 | YMX-22503820 | BOLT | 20425- | |
| 22 | YMX-21301827 | WASHER | 20425- |