KTM 450 XC-W SIX DAYS USA 2010, Owner'S Manual, Page: 88 / 118

TROUBLESHOOTING
86
Faults Possible cause Action
The engine cannot be cranked (elec-
tric starter). Operating error
–
Go through the steps of starting procedure.
( p. 29)
Battery discharged
–
Recharge the battery.
x
( p. 67)
–
Check the charging voltage. x
–
Check the stall current.
x
–
Check the generator.
x
Fuse blown
–
Remove the fuse. ( p. 68)
–
Install the fuse. ( p. 68)
Starter relay defective
–
Check the starter relay.
x
Starter motor defective
–
Check the starter motor. x
Engine turns but does not start Operating error
–
Go through the steps of starting procedure.
( p. 29)
Motorcycle was out of use for a long
time and there is old fuel in the float
chamber
–
Empty the carburetor float chamber.
x
( p. 79)
Fuel supply interrupted
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/adjust the carburetor components.
x
Engine flooded
–
Clean and dry the spark plug or replace if nec-
essary.
Spark plug oily or wet
–
Clean and dry the spark plug or replace if nec-
essary.
Electrode distance (plug gap) of spark
plug too wide
–
Adjust the plug gap.
Guideline
Spark plug electrode gap
0.9 mm (0.035 in)
Defect in ignition system
–
Check the ignition system.
x
Short-circuit cable in cable harness
frayed, short-circuit button or emer-
gency OFF switch defective
–
Check the wiring harness (visual check).
–
Check the electrical system.
Plug connector of CDI control device,
pulse generator or ignition coil oxi-
dized.
–
Clean the plug connector and treat it with con-
tact spray.
Water in carburetor or jets blocked
–
Check/adjust the carburetor components.
x
Engine has no idle Idling jet blocked
–
Check/adjust the carburetor components.
x
Adjusting screws on carburetor dis-
torted
–
Carburetor - adjust the idle speed.
x
( p. 78)
Spark plug defective
–
Change spark plug.
Ignition system defective
–
Check the ignition coil.
x
–
Check the CDI controller.
x
–
Check the spark plug connector. x
–
Check the ignition pulse generator.
x
–
Check the generator.
x
Engine does not speed up Carburetor running over because float
needle dirty or worn
–
Check/adjust the carburetor components.
x
Loose carburetor jets
–
Check/adjust the carburetor components.
x
Ignition system defective
–
Check the ignition coil.
x
–
Check the CDI controller.
x
–
Check the spark plug connector. x
–
Check the ignition pulse generator. x
–
Check the generator.
x
Engine has a lack of power Fuel supply interrupted
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/adjust the carburetor components.
x