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EBU27695
Troubleshooting charts
Starting problems or poor engine performance
1. Fuel
Check the fuel level in
the fuel tank.
2. Battery
Operate the electric starter.
3. Ignition
Remove the spark plug
and check the electrodes.
4. Compression
Operate the electric starter.
There is enough fuel.
There is no fuel.
The engine turns over
The battery is good.
quickly.
Check the battery lead connections,
The engine turns over
and have a Yamaha dealer charge
slowly.
the battery if necessary.
Wipe off with a dry cloth and correct the
Wet
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the ATV.
Dry
There is compression.
There is no compression.
8-56
Check the battery.
The engine does not start.
Supply fuel.
Check the battery.
Operate the electric starter.
The engine does not start.
Check the compression.
The engine does not start.
Have a Yamaha dealer check the ATV.
Have a Yamaha dealer check the ATV.
The engine does not start.
Check the ignition.
8
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Table of Contents
Troubleshooting
