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EBU00440
Troubleshooting chart
1. Fuel
Check if there is fuel
in the fuel tank.
2. Compression
Use electric starter to
see if there is
compression.
3. Ignition
Remove spark plug and
check electrodes.
4. Battery
Use electric starter.
Turn the fuel cock
There is fuel.
lever 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 spark plug cap and
Dry
ground to chassis.
Engine turns over
Battery good.
quickly.
Engine turns over
Check fluid, recharge,
slowly.
check connections.
Remove the
Turn the fuel cock
fuel hose.
lever to "ON".
Restart engine.
Spark good.
Use the
Spark weak.
electric starter.
No spark.
Ask a Yamaha dealer to
inspect.
8-89
Check fuel
No fuel.
flow.
Fuel cock
clogged.
Clean fuel
cock.
Ignition system
normal.
Adjust plug gap
or replace plug.
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