Checking The Starter Motor - Yamaha YZF-R6 99 Service Manual

STARTER MOTOR
EB803511

CHECKING THE STARTER MOTOR

1. Check:
S commutator
Dirt ! Clean with 600 grit sandpaper.
2. Measure:
S commutator diameter a
Out of specification ! Replace the starter
motor.
Min. commutator diameter
27 mm
3. Measure:
S mica undercut a
Out of specification ! Scrape the mica to the
proper measurement with a hacksaw blade
which has been grounded to fit the commuta-
tor.
Mica undercut
0.7 mm
NOTE:
The mica must be undercut to ensure proper
operation of the commutator.
4. Measure:
S armature assembly resistances (commuta-
tor and insulation)
Out of specification ! Replace the starter
motor.
a. Measure the armature assembly resis-
tances with the pocket tester.
Pocket tester
90890-03112
Armature assembly
Commutator resistance 1
0.012
Insulation resistance 2
Above 1 M at 20_C
b. If any resistance is out of specification, re-
place the starter motor.
8-24
ELEC
0.022 at 20_C