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21 TROUBLESHOOTING 117
Faults Possible cause Action
The engine cannot be cranked (elec-
tric starter)
Operating error Carry out the start procedure. ( p. 35)
Battery is discharged Recharge the battery. ( p. 94)
Check the charging voltage.
Check the closed current.
Check the stator winding of the alternator.
Main fuse blown Change the main fuse. ( p. 96)
Starter relay defective Check the starter relay.
Starter motor defective Check the starter motor.
The engine turns but does not start Operating error Carry out the start procedure. ( p. 35)
The plug-in connection of the fuel
hose connection is not connected
Connect the plug-in connection of the fuel line.
Fuse 1 blown Change the fuses of individual power
consumers. ( p. 97)
Fuse 4 blown Change the fuses of individual power
consumers. ( p. 97)
Idle speed is not set correctly Adjust the idle speed. ( p. 108)
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
1.0 mm (0.039 in)
Ignition system defective Check the ignition system.
Short-circuit cable in wiring harness
frayed, kill switch or emergency OFF
switch defective
Check the wiring harness. (visual check)
Check the electrical system.
Defect in fuel injection system Read out the fault memory using the KTM diag-
nostics tool.
Engine does not speed up Defect in fuel injection system Read out the fault memory using the KTM diag-
nostics tool.
Ignition system defective Ignition coil - check the secondary winding.
Check the spark plug connector.
Check the stator winding of the alternator.
Engine has too little power Air filter heavily contaminated Clean the air filter and air filter box.
( p. 65)
Fuel filter is very dirty Change the fuel filter.
Fuel screen is very dirty Change the fuel screen. ( p. 110)
Defect in fuel injection system Read out the fault memory using the KTM diag-
nostics tool.
Exhaust system leaky, deformed or
too little glass fiber yarn filling in
main silencer
Check exhaust system for damage.
Change glass fiber yarn filling in the main
silencer. ( p. 67)
Valve clearance too little Adjust the valve clearance.
Ignition system defective Ignition coil - check the secondary winding.
Check the spark plug connector.
Check the stator winding of the alternator.
The engine dies during the trip Lack of fuel Refuel. ( p. 39)
Fuse 1 blown Change the fuses of individual power
consumers. ( p. 97)
Fuse 4 blown Change the fuses of individual power
consumers. ( p. 97)
Engine overheats Coolant level low in cooling system Check the cooling system for leaks.
Check the coolant level. ( p. 104)
Insufficient airflow Switch off engine when stationary.
Radiator fins very dirty Clean radiator fins.
119


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