21 TROUBLESHOOTING
154
Faults
Possible cause
Action
The engine cannot be cranked
(starter motor)
Operating error
–
Carry out the start procedure.
(
12-V battery discharged
–
Charge the 12-V battery.
–
Check the charging voltage.
–
Check the closed current.
–
Check the stator winding of the alter-
nator.
Main fuse is blown
–
Change the main fuse. (
Starter relay faulty
–
Check the starter relay.
Starter motor faulty
–
Check the starter motor.
The engine turns but does not
start
Operating error
–
Carry out the start procedure.
(
The plug-in connection of the
fuel line is not joined
–
Join the plug-in connection of the fuel
line.
Idle speed is not set correctly
–
Adjust the idle speed.
Fuel supply interrupted
–
Check the fuel tank breather.
Spark plug oily or wet
–
Clean and dry the spark plug, or
change it if necessary.
Plug gap of spark plug too wide
–
Adjust plug gap.
Guideline
Spark plug electrode gap
0.6 mm (0.024 in)
Faulty ignition
–
Ignition coil - check the primary wind-
ing.
–
Check the spark plug connector.
–
Check the stator winding of the alter-
nator.
Short-circuit cable in wiring
harness frayed, switch-off but-
ton or emergency OFF switch
faulty
–
Check wiring harness (visual check).
–
Check the electrical system.
The connector or ignition coil is
loose or oxidized
–
Clean the connector and treat it with
contact spray.
Defect in the fuel injection sys-
tem
–
Check the cabling for damage and the
electrical plug-in connections for corro-
sion and damage.
–
Read out the fault memory using the
KTM diagnostics tool.
Engine has no idle
Spark plug defective
–
Change the spark plug.
Faulty ignition
–
Ignition coil - check the primary wind-
ing.
–
Check the spark plug connector.
–
Check the stator winding of the alter-
nator.
Idle speed is not set correctly
–
Adjust the idle speed.