Troubleshooting Chart - Yamaha WARRIOR YFM350XS Owner's Manual

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 plug and
check electrodes.
4. Battery
Use the electric
starter.
Turn the fuel
There is fuel.
cock to "OFF".
Turn the fuel
Some fuel.
cock 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 plug cap and
Dry
ground to chassis.
Engine turns over
Battery good.
quickly.
Engine turns over Check fluid, recharge,
slowly.
check connections.
Turn the fuel
cock to "ON".
Remove the
Check fuel
fuel hose. flow.
Restart engine.
Use the
electric starter.
8-101
No fuel.
Ignition system
Spark good.
normal.
Spark weak.
Adjust plug gap
No spark.
or replace plug.
Ask a Yamaha dealer to
inspect.
EBU00440
Fuel cock
clogged.
Clean fuel
cock.