Troubleshooting Charts - Yamaha Y15ZR Owner's Manual

Periodic maintenance and adjustment

Troubleshooting charts

Starting problems or poor engine performance
1. Fuel
Check the fuel level in
the fuel tank.
2. Battery
Operate the electric starter.
7
3. Ignition
Remove the spark plug
and check the electrodes.
4. Compression
Operate the electric starter.
There is enough fuel. Check the battery.
There is no fuel. Supply fuel.
The engine turns over
The battery is good.
quickly.
Check the battery lead connections,
The engine turns over
and have a Yamaha dealer charge
slowly.
the battery if necessary.
Wipe off with a dry cloth and correct the
Wet
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
Dry
The engine does not start.
There is compression.
Have a Yamaha dealer check the vehicle.
Have a Yamaha dealer check the vehicle.
There is no compression.
7-39
The engine does not start.
Check the battery.
The engine does not start.
Check the ignition.
Operate the electric starter.
The engine does not start.
Check the compression.
EAU42136