Yamaha FJR13AEV(C) Service Manual page 700

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b. Measure the stator coil resistance.
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EAS28170
CHECKING THE RECTIFIER/REGULATOR
1. Check:
• Charging voltage
Out of specification → Replace the rectifi-
er/regulator.
Charging voltage
14 V at 5000 r/min
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a. Set the engine tachometer to the spark plug
lead of cylinder-#1.
b. Connect the pocket tester (DC 20 V) to the
rectifier/regulator coupler as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
red "1"
• Negative tester probe →
black "2"
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c. Start the engine and let it run at approximate-
ly 5000 r/min.
d. Measure the charging voltage.
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R B
2
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ELECTRICAL COMPONENTS
EAS28180
CHECKING THE HORNS
The following procedure applies to both of the
horns.
1. Check:
• Horn resistance
Out of specification → Replace.
Coil resistance
1.01–1.11 Ω at 20 °C (68 °F)
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a. Disconnect the horn connectors from the
horn terminals.
b. Connect the pocket tester (Ω × 1) to the horn
terminals.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
horn terminal "1"
• Negative tester probe →
horn terminal "2"
c. Measure the horn resistance.
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2. Check:
• Horn sound
Faulty sound → Adjust or replace.
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a. Connect a battery (12 V) to the horn.
b. Turn the adjusting screw in direction "a" or "b"
until the horn sound is obtained.
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2
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