Service Manual

8-14 STARTER SYSTEM
Electric Starter System
•
Measure the armature winding resistance.
○
Set the multimeter selector switch to the R × 1 Ω position
and check the resistance between each segment and all
the others.
If the resistance it too high or even infinite, the armature
winding has an open circuit. Replace the starter motor.
Armature Winding Resistance
Close ∼ 0 Ω
•
Set the multimeter selector switch to the R × 1 kΩ position
and measure the resistance between the commutator and
the armature shaft.
If the resistance is less than infinite, the armature is
shorted.
Commutator to Shaft Resistance
(∞)
•
Test the armature winding for shorts.
○
Place the armature on a growl
er [A].
○
Hold a thin metal strip (e.g., hack saw blade) on top of the
armature.
○
Turn on the growler and ro
tate the armature one complete
turn.
If the metal strip vibrates, the windings are internally
shorted to each other
and the starter motor must be
replaced.
Yoke Assembly Inspection
•
Set the multimeter selector switch to the R × 1 kΩ position
and measure the resistance between the positive brushes
and stator motor yoke.
If the resistance is less than infinite, the positive brush is
shorted to ground. Replace the yoke assembly.
FX Models [A]
FR and FS Models [B]
Positive Brush to Ground Resistance
(∞)