Yamaha BLASTER YFS200S Owner's Manual - page 148
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EBU00440
Troubleshooting chart
Check fuel flow
1. Fuel
Check if there is
fuel in the fuel
tank
2. Compression
Kick the kick lever to
see if there is
compression
3. Ignition
Remove plug and
check electrodes
Wet
Wipe clean with
dry cloth
Dry
Attach plug cap and
ground to chassis
Kick the kick
starter strongly
Spark weak
Spark good
Ignition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust plug gap or
replace plug
There is compresson
Compression normal
Ask a Yamaha dealer to inspect
No compression
There is fuel
Turn the fuel
cock to “OFF”
Remove the
fuel pipe
Water or dirt
mixed in fuel
No fuel
Fuel cock clogged
Some fuel
Turn the fuel
cock to “RES”
Restart engine
No fuel
Supply fuel
Clean the fuel tank
Turn the fuel
cock to “ON”
Clean the fuel cock
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