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Yamaha F90D - Electrical System Troubleshooting

Yamaha F90D
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TRBL
SHTG
Troubleshooting
9-17
6D81G11
Electrical systems
9
Symptom: Battery becomes weaker quickly.
Check the charging system.
Measure the Rectifier Regulator
output peak voltage.
Replace the stator coil.
Within
specification?
Within
specification?
Replace the Rectifier Regulator.
Yes
Yes
No
No
Measure the output peak voltage of the stator coil.
Replace the battery, and then
check the voltage of all electri-
cal equipment on your boat.

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