Pinion Inspection; Armature Inspection - Yamaha 25J Service Manual

– +
ELEC
STARTER MOTOR
SERVICE POINTS

Pinion inspection

1. Inspect:
Pinion teeth
Damage/wear → Replace.
2. Check:
Clutch movement
Incorrect → Replace.
NOTE:
Rotate the pinion clockwise to check that it
moves freely. Also, rotate the pinion coun-
terclockwise to make sure that it locks.

Armature inspection

1. Measure:
Commutator diameter
Out of specification → Replace.
Commutator diameter:
Limit: 29 mm (1.14 in)
2. Measure:
Commutator undercut a
Out of specification → Replace.
Commutator undercut limit:
0.2 mm (0.01 in)
3. Check:
Armature coil continuity
Out of specification → Replace.
Armature coil continuity:
Commutator
segments a
Segment -
Armature core b
Segment -
Armature shaft c
8-25
E
Continuity
No continuity
No continuity