Periodic maintenance and adjustment
8-35
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EAU63470
Troubleshooting charts
Starting problems or poor engine performance
1. Fuel
There is enough fuel.
There is no fuel.
Check the battery.
Supply fuel.
The engine turns over
quickly.
The engine turns over
slowly.
The engine does not
start.
Check the battery.
Wipe off with a dry
cloth and correct the
spark plug gaps, or
replace the spark
plugs.
Check the battery
lead connections, and
have a Yamaha dealer
charge the battery if
necessary.
2. Battery
The battery is good.
The engine does not
start.
Check the ignition.
3. Ignition
Wet
Operate the electric
starter.
Dry
There is compression.
There is no
compression.
The engine does not start.
Have a Yamaha dealer check the vehicle.
Have a Yamaha dealer check the vehicle.
The engine does not
start.
Check the
compression.
Have a Yamaha
dealer check the
vehicle.
Remove the spark
plugs and check
the electrodes.
Operate the electric
starter.
Operate the electric
starter.
Check the fuel level
in the fuel tank.
4. Compression
BV1-9-E2.book 35 ページ ２０１８年８月２８日 火曜日 午後５時２８分
