21
TROUBLESHOOTING
95
Faults
Possible cause
Action
The engine cannot be cranked (elec-
tric starter)
Operating error
–
Carry out the start procedure. (
Battery is discharged
–
Recharge the battery.
–
Check the charging voltage.
–
Check the quiescent current.
–
Check the stator winding of the alternator.
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
Operating error
–
Carry out the start procedure. (
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. (
Fuse
2
blown
–
Change the fuses of individual power
consumers. (
Idle speed is not set correctly
–
Adjust the idle speed.
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.
Engine does not speed up
Defect in fuel injection system
–
Read out the fault memory using the KTM diag-
nostics tool.
Engine has too little power
Air filter is very dirty
–
Clean the air filter and air filter housing.
Fuel filter is very dirty
–
Change the fuel filter.
Fuel screen is very dirty
–
Change the fuel screen.
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 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. (
Fuse
1
blown
–
Change the fuses of individual power
consumers. (
Fuse
2
blown
–
Change the fuses of individual power
consumers. (
Engine overheats
Too little coolant in cooling system
–
Check the cooling system for leaks.
–
Check the coolant level. (
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.
–
Refill the coolant.
Bent radiator hose
–
Change the radiator hose.
Defect in radiator fan system
–
Check fuse
4
.
–
Check the radiator fan.