TROUBLESHOOTING
82
Faults
Possible cause
Action
The engine cannot be cranked (elec-
tric starter).
Operating error
–
Go through the steps of starting the engine.
Battery discharged
–
Recharge the battery.
–
Check the charging voltage.
x
–
Check the closed current.
x
–
Check the generator.
x
Fuse blown
–
Remove the fuse. (
–
Install the fuse. (
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 the engine.
Motorcycle was out of use for a long
time and there is old fuel in the float
chamber
–
Empty the carburetor float chamber.
x
Fuel feed 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
Spark plug defective
–
Change spark plug.
Ignition system defective
–
Check the ignition coil.
x
–
Check the CDI unit.
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 unit.
x
–
Check the spark plug connector.
x
–
Check the ignition pulse generator.
x
–
Check the generator.
x
Engine has too little power.
Fuel feed interrupted
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/adjust the carburetor components.
x
Содержание 450 EXC RACING 2006
Страница 1: ...OWNER S MANUAL 2010 450 EXC EU 530 EXC EU 450 XC W USA ART NO 3211484en ...
Страница 2: ......
Страница 100: ...WIRING DIAGRAM 98 ye Yellow ye bl Yellow black ye re Yellow red ...
Страница 101: ...WIRING DIAGRAM 99 ...
Страница 111: ... 3211484en 3211484en KTM Sportmotorcycle AG 5230 Mattighofen Austria http www ktm com 12 2008 Photo Mitterbauer ...