STARTER MOTOR INSPECTION
STARTER PINION
Inspect the pinion gear for smooth operation. While
holding the starter motor housing, the pinion gear
should turn freely, and not turn in the opposite direction.
If the pinion gear turns both directions or is locked on
the shaft, replace the starter pinion assembly with a new one.
CARBON BEUSHES
When then brushes are worn, the motor will be unable
to produce sufficient torque, and the engine will be
dfficult to turn over. To prevent this, periodically, inspect
the length of the brushes, replacing them when they are
oo short or chipping.
Service Limit
4mm
COMMUTATOR
If the commutator surface is dirty,starting per-formance
decrease.Polish the commutator with #400 or similar fine
emery paper when it is dirty.After polishing wipe the
commutator with a clean dry cloth.
Measure the commutator under cut
①
Service Limit
0.2mm
ARMATURE COIL
Using the pocket tester,check the coil for open and
ground by placing probe pins on each commu-tator
segent and rotor core(to test for ground )and on any
two segments at various places(to test for open),
with the brushes lifted off the commuta-for surface.
If the coil is found to be open-circuited or ground-ed,
replace the armature.Continuous use of a defective
armature will cause the starter motor to suddenly fail.
STARTER RELAY INSPECTION
Disconnect lead wire of the starter motor at starter relay.
Turn on the ignition switch and squeeze the rear brake
lever, inspect the continuity between the terminals,
positive and negative, when pushing the starter button.
If the starter relay is in sound condition, continuity is found.
Check the coil for “open”, “ground” and ohmic resistance.
The coil is in good condition if the resistance is as follows.
STD resistance
50-90
Ω
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