Troubleshooting Charts - Yamaha AEROX NS50 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. Compression
Operate the
electric starter or the
kickstarter.
6
3. Ignition
Remove the spark plug
and check the electrodes.
4. Battery
Operate the
electric starter.
There is
Check the compression.
enough fuel.
There is
Supply fuel.
no 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.
The engine turns over
Check the electrolyte and battery
slowly.
lead connections, and charge the
battery if necessary.
6-26
The engine does not start.
Check the compression.
Open the throttle halfway and
operate the electric starter.
The engine does not start.
Check the battery.
The engine does not start. Have a
Yamaha dealer check the vehicle.
EAU37622