39
TROUBLESHOOTING 12 VOLT STARTERS (Cont.)
PROBLEM PROBABLE CAUSE FIX
Motor stalls under load Shorted or open armature Replace armature.
Shorted field coil Correct, or replace housing assembly.
Intermittent operation Brushes binding in holders Free up brushes. Replace worn brushes
and those which have come in contact with
grease and oil.
Dirty or oily commutator Clean and dress commutator.
Loose or faulty electrical Correct
connections
Open armature Replace armature and interlock switch.
Break in electrical circuit Disconnect ignition cut-off wire at the
engine. Crank engine, if spark, check
ignition switch, safety switch and interlock
switch. Check wires for poor connections,
cuts or breaks.
Sluggish disengagement Dirt and oil on assembly and Clean drive assembly and armature shaft
of the drive assembly armature shaft and relubricate shaft splines.
pinion gear
Bent armature Replace armature.
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