Starter Motor Inspection - Yamaha XVS6501997 Service Manual

ELECTRIC STARTING SYSTEM
EB803034

STARTER MOTOR INSPECTION

1. Inspect:
S Commutator
2. Measure:
S Commutator diameter a
3. Measure:
S Mica undercut b
NOTE:
The mica insulation of the commutator must be
undercut to ensure proper operation of the com-
mutator.
4. Inspect:
S Armature
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Inspection steps:
D Connect the pocket tester for the continuity
1 and insulation 2 checks.
D Measure the armature coil resistances.
D If the resistance is incorrect, replace the
starter motor.
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7-18
ELEC
Dirty ! Clean it with #600 grit sandpaper.
Out of specification ! Replace the starter
motor.
Commutator wear limit:
27 mm
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
coil resistances
tion/continuity)
Defects ! Replace the starter motor.
Armature coil continuity
resistance 1 :
0 Ω at 20_C
Armature coil insulation
resistance 2 :
More than 1 MΩ at 20_C
E
(insula-