check engine YAMAHA YFM600FWA 2001 User Guide

8-87
EBU00440
Troubleshooting chart
1. Fuel
Check if there is fuel
in the fuel tank.Enough fuelTurn the fuel
cock to “OFF”.Remove the fuel pipe
from the fuel cock. No fuelFuel cock
clogged
Clean fuel
cock. Some fuelTurn the fuel
cock to “RES”.Restart engine.
No fuel
Supply fuel
2. Compression
Use the electric
starter to see if there
is compression.Compression
Compression normal
No compression
Ask a Yamaha dealer to inspect.
3. Ignition
Remove the plug and
check the electrode.WetWipe clean with
dry cloth.
DryAttach plug cap and
ground to chassis.Use the
electric starter.Spark goodIgnition system
normal
Spark weak
Adjust plug gap
or replace plug. No spark
Ask a Yamaha dealer to inspect. 4. Battery
Use the electric
starter.Engine turns over
quickly.Battery good
Engine turns over
slowly.
Recharge, check
connections.
Check fuel
flow Turn the fuel
cock to “ON”.