COMMUTATOR |
| The procedure is the same as that for 4B1 engine. |
BRUSH HOLDER |
| The procedure is the same as that for 4B1 engine. |
OVERRUNNING CLUTCH |
| The procedure is the same as that for 4B1 engine. |
BRUSHES |
| The procedure is the same as that for 4B1 engine. |
ARMATURE COIL |
| The procedure is the same as that for 4B1 engine. |