EBU00440
Troubleshooting chart
Starting problems or poor engine performance
There is fuel
1. Fuel
Check if there is
fuel in the fuel
Some fuel
tank
No fuel
2. Compression
Kick the kick starter
There is compresson
to see if there is
compression
No compression
3. Ignition
Wet
Remove plugs and
check electrodes
Dry
Remove the
Check fuel flow
fuel pipe
Turn the fuel
cock to "OFF"
Turn the fuel
Restart engine
cock to "RES"
Supply fuel
Compression normal
Ask a Yamaha dealer to inspect
Wipe clean with
dry cloth
Attach plug cap and
Kick the kick
ground to chassis
starter strongly
No fuel
Spark good
Spark weak
No spark
Ask a Yamaha dealer to inspect
8-117
Fuel cock clogged
Clean fuel cock
Ignition system normal
Adjust plug gap or
replace plug(s)
