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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. Attach the engine tachometer to the spark
plug lead of the front cylinder.
b. Connect the pocket tester (DC 20 V) to the
battery terminals as shown.
Digital tachometer
90890-06760
YU-39951-B
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
positive battery terminal "1"
• Negative tester probe →
negative battery terminal "2"
2
c. Start the engine and operate it run at approx-
imately 5000 r/min.
d. Measure the charging voltage.
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B B B
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ELECTRICAL COMPONENTS
EAS1TP1008
CHECKING THE OIL LEVEL SWITCH
1. Drain:
• Engine oil
2. Remove:
• Oil level switch
(from the crankcase)
3. Check:
• Oil level switch resistance
Out of specification → Replace the oil level
switch.
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Oil level switch
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a. Connect the pocket tester (Ω × 100) to the oil
level switch terminal as shown.
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Minimum level position "A"
• Positive tester probe →
connector (white) "1"
• Negative tester probe →
body ground "2"
Maximum level position "B"
• Positive tester probe →
connector (white) "1"
• Negative tester probe →
body ground "2"
b. Measure the oil level switch resistance.
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7-165
Maximum level position resis-
tance
484–536 Ω
Minimum level position resis-
tance
114–126 Ω
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Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
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