Troubleshooting Charts - Yamaha MT-03 Owner's Manual

PERIODIC MAINTENANCE AND MINOR REPAIR

Troubleshooting charts

Starting problems or poor engine performance
1
WARNING
0
Keep away open flames and do not smoke while checking or working on the fuel system.
2
1. Fuel
3
Check the fuel level in the
fuel tank.
4
2. Compression
5
Operate the electric
starter.
6
3. Ignition
7
Remove the spark plug
and check the electrodes.
8
9
4. Battery
10
Operate the electric
starter.
There is enough
fuel.
There is no fuel.
There is
compression.
There is no
compression.
Wipe off with a dry cloth and correct
Wet.
the spark plug gap, or replace the
spark plug.
Have a Yamaha dealer check the
Dry.
vehicle.
The engine turns
over quickly.
The engine turns
over slowly.
Check the
compression.
Supply fuel.
Check the ignition.
Have a Yamaha dealer check
the vehicle.
The battery is good.
Check the battery lead connections,
and charge the battery if necessary.
6-40
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.
EAU25921