20 TROUBLESHOOTING
126
Faults
Possible cause
Action
The engine does not turn when
the start button is pressed
Operating error
–
Carry out start procedure. (
12 V battery discharged
–
Charge the 12-V battery.
–
Check the charging voltage.
–
Check the open-circuit current.
–
Check the stator winding of the alter-
nator.
Main fuse blown
–
Change the main fuse. (
Starter relay defective
–
Check the starter relay.
Starter motor defective
–
Check the starter motor.
Engine turns but does not start
Quick release coupling not
joined
–
Join quick release coupling.
Fuel screen in the quick release
coupling is clogged
–
Change the fuel screen.
Idle speed is not set correctly
–
Adjust the idle speed.
Spark plug sooty or wet
–
Clean and dry the spark plug and spark
plug connector, or change if necessary.
Plug gap of spark plug too wide
–
Adjust plug gap.
Guideline
Spark plug electrode gap
1.0 mm (0.039 in)
Short-circuit cable in wiring
harness frayed, stop button
faulty
–
Check the wiring harness. (visual
check)
–
Check the electrical system.
Malfunction in the electronic
fuel injection
–
Read out the fault memory using the
KTM diagnostics tool.
Engine does not speed up
Malfunction in the electronic
fuel injection
–
Read out the fault memory using the
KTM diagnostics tool.
Engine has too little power
Air filter is very dirty
–
Clean the air filter and air filter box.
(
Fuel filter is very dirty
–
Change the fuel filter.
Malfunction in the electronic
fuel injection
–
Read out the fault memory using the
KTM diagnostics tool.
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.
Valve clearance too little
–
Adjust the valve clearance.
Engine dies during the trip
Lack of fuel
–
Refuel. (
Engine overheats
Too little coolant in cooling sys-
tem
–
Check the cooling system for leakage.
–
Check the coolant level. (
Too little air stream
–
Switch off the engine when standing.
Radiator fins very dirty
–
Clean radiator fins.
Foam formation in cooling sys-
tem
–
Drain the coolant.
–
Refill with coolant.
Bent radiator hose
–
Change the radiator hose.
Содержание 450 SX-F
Страница 1: ...OWNER S MANUAL 2022 450 SX F FACTORY EDITION Art no 3214419en ...
Страница 2: ......
Страница 111: ...COOLING SYSTEM 15 109 Finishing work Install the engine guard p 50 ...
Страница 123: ...SERVICE WORK ON THE ENGINE 17 121 Start the engine and check for leaks ...
Страница 151: ...INDEX 149 V Vehicle identification number 12 View of vehicle front left 10 rear right 11 W Work rules 8 ...
Страница 152: ... 3214419en 3214419en 03 2022 KTM Sportmotorcycle GmbH 5230 Mattighofen Austria KTM COM Photo Mitterbauer KISKA KTM ...