Checking The Starter Motor Operation; Checking The Stator Coil - Yamaha 2009 YZF-R1 (Y) Service Manual

c. Set the main switch to "ON".
d. Turn the lean angle sensor to 45°.
e. Measure the lean angle sensor output volt-
age.
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EAS28940
CHECKING THE STARTER MOTOR OPERA-
TION
1. Check:
• Starter motor operation
Does not operate → Perform the electric
starting system troubleshooting, starting
with step 4.
Refer to "TROUBLESHOOTING" on page
8-11.
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a. Connect the positive battery terminal "1"
and starter motor lead "2" with a jumper
lead "3".
EWA13810
WARNING
• A wire that is used as a jumper lead must
have at least the same capacity of the bat-
tery lead, otherwise the jumper lead may
burn.
• This check is likely to produce sparks,
therefore, make sure no flammable gas or
fluid is in the vicinity.
b. Check the starter motor operation.
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ELECTRICAL COMPONENTS
EAS28150

CHECKING THE STATOR COIL

1. Disconnect:
• Stator coil coupler
(from the wire harness)
2. Check:
• Stator coil resistance
Out of specification → Replace the stator
coil.
Stator coil resistance
0.112–0.168 Ω at 20 °C (68 °F)
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a. Connect the digital circuit tester to the sta-
tor coil coupler as shown.
Digital circuit tester
90890-03174
Model 88 Multimeter with
tachometer
YU-A1927
• Positive tester probe
White "1"
• Negative tester probe
White "2"
• Positive tester probe
White "1"
• Negative tester probe
White "3"
• Positive tester probe
White "2"
• Negative tester probe
White "3"
b. Measure the stator coil resistance.
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