6.ELECTRICAL SYSTEM
6-3
Battery
The battery supplies DC power to the
electric starter for cranking the engine.
During engine starting, it also supplies DC
power to the entire electrical system.
At low engine RPM operation and high
current load conditions, it supplements the
magneto output and helps to maintain a
steady system voltage.
INSPECTION
CHARGING SYSTEM OUTPUT
First ensure that battery is in good
condition prior
to performing the following tests.
Testing the Output Voltage Using
multimeter.
1. Start engine with the less consumption as
possible (no lights, no accessories).
2. Increase engine RPM as specified in the
following table and read voltage in the
multimeter.
If voltage is above specification, replace
voltage regulator/rectifier.
If voltage is below specification, check
stator output and wiring harness prior to
concluding that voltage regulator/rectifier
is defective.
Check stator
Stator Connector Access
The stator is directly connected to the
voltage regulator/rectifier.
Testing the Stator Continuity
1. Disconnect the stator connector from the
voltage regulator/rectifier.
2. Check resistance between YELLOW wires.
3. If any reading is out of specification,
replace stator.
4. Re-plug connectors properly.
Testing the Stator Static Insulation
1. Disconnect the stator connector from the
voltage regulator/rectifier.
2. Connect multimeter between any
YELLOW wire (on stator connector) and
engine ground.
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