Starter Motor: Testing and Inspection

STARTER INOPERATIVE

1. Turn on headlamps, then engage starter motor.
2. If headlamps go out when starting, repair or replace starter motor.
3. If headlamps remain on, the solenoid is defective and/or carbon brushes worn.

STARTER TURNS TOO SLOWLY

1. Bearings worn or dirty.
2. Electrical defect in solenoid, armature or coils.
3. Drive pinion (free running) worn or defective.

STARTER SLIPS

1. Flywheel and/or starter teeth damaged.
2. Drive pinion defective.
3. Starter engaging mechanism defective.

STARTER DOES NOT TURN, ONLY SOLENOID CLICKS

1. Turn on headlamps, then engage starter.
2. If headlamps go out, battery is defective or there is a short circuit in the starter motor.
3. If lamps stay on, carbon brushes are worn or the solenoid switch is defective.