Yamaha V Star 950 Service Manual page 376

• Positive tester probe →
white "2"
• Negative tester probe →
white "3"
b. Measure the stator coil resistance.
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EAS28170
CHECKING THE RECTIFIER/REGULATOR
1. Check:
• Charging voltage
Out of specification → Replace the recti-
fier/regulator.
Charging voltage
14 V at 5000 r/min
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a. Attach the engine tachometer to the spark
plug lead of the front cylinder.
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"
ELECTRICAL COMPONENTS
c. Start the engine and operate it run at
approximately 5000 r/min.
d. Measure the charging voltage.
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EAS28180
CHECKING THE HORN
1. Check:
• Horn resistance
Out of specification → Replace.
Coil resistance
1.07–1.11 Ω
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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 → Replace.
EAS3D81012
CHECKING THE OIL LEVEL SWITCH
1. Drain:
• Engine oil
2. Remove:
• Oil level switch
(from the crankcase)
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