Troubleshooting Chart - Yamaha WOLVERINE YFM350FXT Owner's Manual

EBU00440

Troubleshooting chart

1. Fuel
Check if there is fuel
in the fuel tank.
2. Compression
Use the electric
starter to see if
there is compression.
3. Ignition
Remove the
spark plug and
check the electrodes.
4. Battery
Use the electric starter.
Turn the fuel cock
There is fuel.
lever to "OFF".
Turn the fuel cock
Some fuel.
lever to "RES".
Supply fuel.
No fuel.
There is compression.
Compression normal.
Ask a Yamaha dealer to
No compression.
inspect.
Wipe clean with dry cloth.
Wet
Attach spark plug cap and
Dry
ground to chassis.
Engine turns over
Battery is good.
quickly.
Engine turns over Check the battery lead connections,
slowly. and charge the battery if necessary.
Turn the fuel cock
lever to "ON".
Remove the fuel hose Check the
from the fuel cock. fuel flow.
Restart the engine.
Use the
electric starter.
Ask a Yamaha dealer to
inspect.
8-45
No fuel.
Ignition system is
Spark is good.
normal.
Spark is weak.
Adjust the spark plug gap
No spark.
or replace the spark plug.
Fuel cock is
clogged.
Clean the
fuel cock.