Yamaha XVS6501997 - Starter Motor Inspection

E
7-18
ELECTRIC STARTING SYSTEM
ELEC
NOTE:
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EB803034
STARTER MOTOR INSPECTION
1. Inspect:
 Commutator
Dirty  Clean it with #600 grit sandpaper.
2. Measure:
 Commutator diameter
a
Out of specification  Replace the starter
motor.
Commutator wear limit:
27 mm
3. Measure:
 Mica undercut
b
Out of specification  Scrape the mica to
the proper measurement using a hacksaw
blade which has been grounded to fit the
commutator.
Mica undercut:
0.7 mm
The mica insulation of the commutator must be
undercut to ensure proper operation of the com-
mutator.
4. Inspect:
 Armature coil resistances (insula-
tion/continuity)
Defects  Replace the starter motor.
Inspection steps:
 Connect the pocket tester for the continuity
1
and insulation
2
checks.
D Measure the armature coil resistances.
Armature coil continuity
resistance
1
:
0 Ω at 20C
Armature coil insulation
resistance
2
:
More than 1 MΩ at 20C
D If the resistance is incorrect, replace the
starter motor.