20
TROUBLESHOOTING
96
Faults
Possible cause
Action
The engine does not turn when the
electric starter button is pressed
Operating error
–
Carry out the start procedure. (
Battery discharged
–
Recharge the battery.
–
Check the charging voltage.
–
Check the open-circuit current.
–
Check the stator winding of the alternator.
Main fuse blown
–
Change the main fuse. (
Faulty starter relay
–
Check the starter relay.
Faulty starter motor
–
Check the starter motor.
Engine turns but does not start
The plug-in connection of the fuel
line is not connected
–
Connect the plug-in connection of the fuel line.
Fuel screen in the fuel hose connec-
tion is clogged
–
Change the fuel screen.
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
0.8 mm (0.031 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 box.
Fuel filter is very dirty
–
Change the fuel filter.
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. (
Engine overheats
Too little coolant in cooling system
–
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 the radiator fins.
Foam formation in cooling system
–
Drain the coolant.
–
Refill the coolant.
Bent radiator hose
–
Change the radiator hose.
FI
warning lamp (
MIL
) lights
up/flashes
Defect in fuel injection system
–
Stop the motorcycle and identify the faulty part
using the blink code.
–
Check the cabling for damage and the electri-
cal plug-in connections for corrosion and dam-
age.
–
Read out the fault memory using the KTM diag-
nostics tool.
High oil consumption
Engine vent hose bent
–
Route the vent hose without bends or change it
if necessary.
Engine oil level too high
–
Check the engine oil level. (
Engine oil too thin (low viscosity)
–
Change the engine oil and oil filter, clean the
oil screen.
Piston or cylinder worn
–
Measure the piston/cylinder mounting clear-
ance.