Yamaha VX600ERG Service Manual page 214

ELECTRICAL STARTING SYSTEM
Inspection
1. Inspect:
•
CAUTION:
Lightly grip the armature with a vise.
SEA8270
2. Measure:
•
SEA8280
3. Measure:
•
SEA8290
8-15
ELEC
Commutator (outer surface)
Dirty → Clean with #600 grit sandpaper 1.
Hold the armature in a vise 2 and copper or
aluminium plate 3.
Commutator diameter a
Measure the diameter a of the commutator at
points where the brush comes in contact.
Out of specification → Replace the starter
motor.
Commutator diameter wear limit:
27 mm (1.06 in)
Mica undercut (insulation depth) a
(between commutator segments)
Out of specification → Scrape mica 1 to
proper limits.
Use a hacksaw blade 2 that is ground to fit.
Mica undercut:
0.6 mm (0.024 in)
– +