Yamaha FJR13AG Service Manual page 737

EAS30566
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
0.128–0.192 Ω (W-W)
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a. Connect the digital circuit tester to the stator
coil coupler as shown.
Digital circuit tester
90890-03174
Model 88 Multimeter with ta-
chometer
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"
W W W
1 2 3
b. Measure the stator coil resistance.
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EAS30680
CHECKING THE RECTIFIER/REGULATOR
1. Check:
• Charging voltage
Out of specification → Replace the rectifi-
er/regulator.
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8-260
ELECTRICAL COMPONENTS
Charging voltage
14.0 V at 5000 r/min
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a. Connect the pocket tester (DC 20 V) to the
battery terminals as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
positive battery terminal "1"
• Negative tester probe →
negative battery terminal "2"
b. Start the engine and let it run at approximate-
ly 5000 r/min.
c. Measure the charging voltage.
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EAS31963
CHECKING THE HEADLIGHT ASSEMBLY
1. Check:
• Headlight assembly
Faulty → Replace.
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a. Disconnect the headlight sub-wire harness
coupler from the wire harness.
b. Connect the battery (DC 12 V) as shown.
• Positive battery terminal →
red/white "1"
• Negative battery terminal →
yellow, yellow/white, and black "2"
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1
2
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