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TROUBLESHOOTING
91
Faults
Possible cause
Action
The engine cannot be cranked (elec-
tric starter)
(250 EXC AUS/XC
‑
W/XC,
all 300 models)
Operating error
–
Go through the steps of starting the engine.
(
p. 31)
Battery discharged
–
Recharge the battery.
x
(
p. 72)
–
Check the charging voltage.
x
–
Check the closed current.
x
–
Check the alternator.
x
Fuse blown
–
Remove the fuse. (
p. 73)
–
Replace the fuse. (
p. 73)
Starter relay faulty
–
Check the starter relay.
x
Starter motor faulty
–
Check the starter motor.
x
Engine turns but does not start
Operating error
–
Go through the steps of starting the engine.
(
p. 31)
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. 87)
Fuel feed interrupted
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/set the carburetor components.
Spark plug oily or wet
–
Clean and dry the spark plug, or change it if
necessary.
Electrode distance (plug gap) of spark
plug too wide
–
Adjust the plug gap.
Guideline
(All 125/150/200 models)
Spark plug electrode gap
0.60 mm (0.0236 in)
(All 250/300 models)
Spark plug electrode gap
0.60 mm (0.0236 in)
Fault in ignition system
–
Check the ignition system.
x
Short circuit cable in wiring harness
frayed, short circuit button defective
–
Check the short circuit button.
x
Socket connector or ignition coil is
loose or oxidized
–
Clean the plug-in connector and treat it with
contact spray.
Water in carburetor or jets blocked
–
Check/set the carburetor components.
Engine has no idle
Idling jet blocked
–
Check/set the carburetor components.
Adjusting screws on carburetor dis-
torted
–
Carburetor - adjust the idle speed.
x
(
p. 86)
Spark plug defective
–
Change the spark plug.
Ignition system defective
–
Check the ignition coil.
x
–
Check the spark plug connector.
x
Engine does not speed up
Carburetor running over because float
needle dirty or worn
–
Check/set the carburetor components.
Loose carburetor jets
–
Check/set the carburetor components.
Fault in ignition system
–
Check the ignition system.
x
Engine has too little power
Fuel feed interrupted
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/set the carburetor components.
Air filter very dirty
–
Clean the air filter.
x
(
p. 82)
Exhaust system leaky, deformed or
too little glass fiber yarn filling in
main silencer
–
Check exhaust system for damage.
–
Change the glass fiber yarn filling of the main
silencer.
x
(
p. 81)
Fault in ignition system
–
Check the ignition system.
x
Diaphragm or reed valve housing
damaged
–
Check the diaphragm and reed valve housing.
Содержание 125 EXC EU 2010
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Страница 140: ...3211466en 3211466en KTM Sportmotorcycle AG 5230 Mattighofen Austria http www ktm com 06 2009 Photo Mitterbauer...