Yamaha F25 [404/444] Starter motor

8-23

– +

ELEC

STARTER MOTOR

SERVICE POINTS

Pinion gear assy. inspection

1. Inspect:

● Pinion gear teeth

Damage/wear → Replace.

2. Check:

● Clutch movement

Incorrect → Replace.

NOTE:

Rotate the pinion gear assy. clockwise to

check that it moves freely. Also, rotate the

pinion gear assy. counterclockwise to make

sure that it locks.

Armature inspection

1. Measure:

● Commutator undercut a

Out of specification → Replace.

Commutator undercut limit:

0.8 mm (0.03 in)

2. Check:

● Armature coil continuity

Out of specification → Replace.

Armature coil continuity:

Commutator

segments a

Continuity

Segment -

Armature core b

No continuity

Segment -

Armature shaft c

No continuity