Condition | Possible Cause | Action |
---|---|---|
Motor not running (Operating sound of magnetic switch heard)
|
Battery run down
|
Recharge battery.
|
Battery voltage too low due to battery deterioration
|
Replace battery.
|
|
Loose battery cable connections
|
Retighten.
|
|
Burnt main contact point, or poor contacting action of magnetic switch
|
Replace starting motor.
|
|
Brushes are seating poorly or worn down
|
Replace starting motor.
|
|
Weakened brush spring
|
Replace starting motor.
|
|
Burnt commutator
|
Replace starting motor.
|
|
Layer short-circuit of armature
|
Replace starting motor.
|
|
Crankshaft rotation obstructed
|
Repair.
|