Troubleshooting Chart - Yamaha Zuma YW125B Owner's Manual

PERIODIC MAINTENANCE AND ADJUSTMENT

Troubleshooting chart

1. Fuel
1
Check the fuel level in
the fuel tank.
2
2. Compression
3
Operate the electric starter.
4
5
3. Ignition
Remove the spark plug
6
and check the electrodes.
7
4. Battery
8
Operate the electric starter.
9
There is enough fuel. Check the compression.
There is no fuel.
Supply fuel.
There is compression. Check the ignition.
Have a Yamaha dealer
There is no compression.
check the vehicle.
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 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.
6-31
The engine does not start.
Check the compression.
Operate the electric starter.
The engine does not start.
Check the battery.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
EAU1722A
EAUT1982