Troubleshooting Charts - Yamaha WR450F 2013 Owner's Manual

PERIODIC MAINTENANCE AND ADJUSTMENT

Troubleshooting charts

Starting problems or poor engine performance
1
1. Fuel
2
Check the fuel level in
the fuel tank.
3
4 2. Battery
Operate the electric starter.
5
6
3. Ignition
7
Remove the spark plug
and check the electrodes.
8
4. Compression
9
Operate the electric starter
or the kickstarter.
There is enough fuel. Check the compression.
There is no fuel. Supply 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 vehicle.
Dry
The engine does not start. Have a
There is compression.
Yamaha dealer check the vehicle.
Have a Yamaha dealer
There is no compression.
check the vehicle.
6-41
The engine does not start.
Check the battery.
The engine does not start.
Check the ignition.
Operate the electric starter or the
kickstarter.
The engine does not start.
Check the compression.
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