Operation Manual

ELECTRICAL COMPONENTS
8-137
b. Measure the stator coil resistance.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
EAS28170
CHECKING THE RECTIFIER/REGULATOR
1. Check:
• Battery charging voltage
Out of specification → Check the stator
coil condition. If the stator coil does not
have a problem, replace the rectifier/reg-
ulator.
Refer to “CHECKING THE STATOR
COIL” on page 8-136.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Set the engine tachometer to the spark
plug lead of cylinder #1.
b. Connect the pocket tester (AC 20 V) to the
battery terminal as shown.
c. Start the engine and let it run at approxi-
mately 5000 r/min.
d. Measure the rectifier/regulator input volt-
age.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
EAS28180
CHECKING THE HORN
1. Check:
• Horn resistance
Out of specification → Replace.
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Disconnect the horn leads from the horn
terminals.
b. Connect the digital circuit tester to the horn
terminals.
Digital circuit tester
90890-03189
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”
Battery charging voltage
above 14 V at 5000 r/min
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
Battery positive terminal “1”
• Negative tester probe →
Battery negative terminal “2”
Coil resistance
1.06–1.11 Ω
Digital circuit tester
90890-03189
Model 88 Multimeter with
tachometer
YU-A1927
• Positive tester probe →
Horn terminal “1”
• Negative tester probe →
Horn terminal “2”