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Troubleshooting charts
Starting problems or poor engine performance
1. Fuel
Check the fuel level in
the fuel tank.
2. Compression
Operate the electric starter.
3. Ignition
Remove the spark plugs
and check the electrodes.
4. Battery
Operate the electric starter.
PERIODIC MAINTENANCE AND ADJUSTMENT
There is enough fuel.
Check the compression.
There is no fuel.
Supply fuel.
There is compression.
Check the ignition.
Have a Yamaha dealer
There is no compression.
check the vehicle.
Wipe off with a dry cloth and correct the
Wet
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.
Dry
The engine turns over
The battery is good.
quickly.
The engine turns over
Check the battery lead connections,
slowly.
and charge the battery if necessary.
7-44
The engine does not start.
Check the compression.
Operate the electric starter.
The engine does not start.
Check the battery.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
EAU42501
7
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Table of Contents
Troubleshooting
