TROUBLESHOOTING 92
Faults Possible cause Action
The engine cannot be cranked (elec-
tric starter)
Operating error – Carry out the start procedure. ( p. 24)
Battery is discharged –
Recharge the battery. x ( p. 73)
–
Check the charging voltage. x
–
Check the quiescent current. x
–
Check the stator winding of the alternator. x
Main fuse blown – Change the main fuse. ( p. 74)
Starter relay defective –
Check the starter relay. x
Starter motor defective –
Check the starter motor. x
Engine turns but does not start Operating error – Carry out the start procedure. ( p. 24)
Coupling of fuel hose connection not
joined together
– Join the fuel hose connection.
Fuse 1 blown – Change the fuses of individual power
consumers. ( p. 74)
Fuse 2 blown – Change the fuses of individual power
consumers. ( p. 74)
Idle speed is not set correctly –
Adjust the idle speed. x ( p. 83)
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
Spark plug electrode gap
1.0 mm (0.039 in)
Short circuit cable in wiring harness
frayed, kill 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. x
Engine does not speed up Defect in fuel injection system – Read out the fault memory using the KTM diag-
nostics tool. x
Engine has too little power Air filter is very dirty –
Clean the air filter and air filter housing. x
( p. 46)
Fuel filter is very dirty –
Change the fuel filter. x
Fuel screen is very dirty –
Change the fuel screen. x ( p. 85)
Defect in fuel injection system – Read out the fault memory using the KTM diag-
nostics tool. x
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. 47)
Valve clearance too little –
Adjust the valve clearance. x
Engine dies during the trip Lack of fuel – Refuel. ( p. 26)
Fuse 1 blown – Change the fuses of individual power
consumers. ( p. 74)
Fuse 2 blown – Change the fuses of individual power
consumers. ( p. 74)
Engine overheats Too little coolant in cooling system – Check the cooling system for leaks.
– Check the coolant level. ( p. 81)
Too little air stream – Switch off the engine when standing.
Radiator fins very dirty – Clean the radiator fins.
Foam formation in cooling system –
Drain the coolant. x ( p. 81)
–
Refill the coolant. x ( p. 82)
Bent radiator hose –
Change the radiator hose. x
Defect in radiator fan system – Check fuse 4.
–
Check the radiator fan. x
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