7-24
– +
ELEC
ELECTRIC STARTING SYSTEM
YP803034
INSPECTION AND REPAIR
1. Inspect:
8 Commutator
Dirt→Clean it with #600 grit sandpaper.
2. Measure:
8 Commutator diameter a
Commutator wear limit:
15.1 mm (0.59 in)
Out of specification→Replace the starter
motor
3. Measure:
8 Mica undercut a
Mica undercut:
1.05 mm (0.04 in)
Out of specification→Scrape the mica to
the proper value (a hacksaw blade can
be ground to fit).
NOTE:
The mica insulation of the commutator must
be undercut to ensure proper operation of com-
mutator.
4. Inspect:
8 Armature coil resistances (installation/
continuity)
Defects→Replace the starter motor.
If commutator is dirty, clean it with sand-
paper.
O: Continuity
x: No continuity
Bad condition→Replace.
Good Bad condition
condition
A
B
×
??
?
?
×
××
a
a
A
A
B
B
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