Troubleshooting - KTM 450 SX 2009 Owner's Manual

TROUBLESHOOTING

Faults
Engine turns but does not start.
Possible cause
Operating error
Vehicle was out of use for a long time
and there is old fuel in the float cham-
ber
Fuel feed interrupted
Engine flooded
Spark plug oily or wet
Electrode distance (plug gap) of spark
plug too wide
Action
–
Follow the instructions on starting the engine.
( p. 45)
–
Empty the carburetor float chamber.
( p. 157)
–
Check the tank breather.
–
Clean fuel tap.
–
Clean carburetor.
–
Clean and dry spark plug or replace if necessary.
–
Clean and dry spark plug or replace if necessary.
–
Adjust the plug gap.
Guideline
Spark plug electrode gap
0.7 mm (0.028 in)
166
x