Yamaha XVS650 Service Manual page 287

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ELECTRIC STARTING SYSTEM
IELECI
ell
EB803034
STARTER MOTOR INSPECTION
1.1nspect:
• Commutator
Dirty
~
Clean it with #600 grit sandpaper.
2.Measure:
• Commutator diameter
®
Out of specification
~
Replace the starter
motor.
Commutator wear limit:
27 mm (1.06 in)
3.Measure:
• Mica undercut
<IV
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 (0.03 in)
NOTE:
The mica insulation of the commutator
must be undercut to ensure proper opera-
tion of the commutator.
4.1nspect:
• Armature coil resistances (insulation/con-
tinuity)
Defects
~
Replace the starter motor.
**********************************
Inspection steps:
• Connect the pocket tester for the continu-
ity
G)
and insulation
®
checks.
• Measure the armature coil resistances.
Armature coil continuity resis-
tance G):
o
Q
at 20°C (68°F)
Armature coil insulation resis-
tance
®:
More than 1 Mil at 20
0
e
(68°F)
• If the resistance is incorrect, replace the
starter motor.
**********************************
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