TROUBLESHOOTING
174
Faults
Possible cause
Action
Engine turns but does not start.
Operating error
–
Follow the instructions on starting the engine.
Vehicle was out of use for a long time
and there is old fuel in the float cham-
ber
–
Empty the carburetor float chamber.
x
Fuel supply interrupted
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/adjust the carburetor components.
x
Spark plug oily or wet
–
Clean and dry spark plug or replace if necessary.
Electrode distance (plug gap) of spark
plug too wide
–
Adjust the plug gap.
Guideline
Spark plug electrode gap
0.6 mm (0.024 in)
Fault in ignition system
–
Check the ignition system.
x
Socket connector of CDI control
device, pulse generator or ignition coil
oxidized
–
Clean the plug-in connector and treat it with con-
tact spray.
Water in carburetor or jets is blocked
–
Check/adjust the carburetor components.
x
Idle speed is set too high
–
Carburetor - adjust the idle speed.
x
Adjusting screws on carburetor dis-
torted
–
Carburetor - adjust the idle speed.
x
Idling jet blocked
–
Check/adjust the carburetor components.
x
Loose carburetor jets
–
Check/adjust the carburetor components.
x