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21 TROUBLESHOOTING
Faults
The engine cannot be cranked
(electric starter)
The engine turns but does not
start
Engine has no idle
150
Possible cause
Operating error
Battery discharged
Main fuse is blown
Starter relay faulty
Starter motor faulty
Operating error
The plug-in connection of the
fuel line is not joined
Idle speed is not set correctly
Fuel supply interrupted
Spark plug oily or wet
Electrode distance (plug gap)
of spark plug too wide
Faulty ignition
Short-circuit cable in wiring
harness frayed, kill switch or
emergency OFF switch defec-
tive
The connector or ignition coil is
loose or oxidized
Defect in the fuel injection sys-
tem
Spark plug defective
Faulty ignition
Idle speed is not set correctly
Action
–
Carry out the start procedure.
(
p. 45)
–
Recharge the battery.
(
–
Check the charging voltage.
–
Check the closed current.
–
Check the stator winding of the alter-
nator.
–
Change the main fuse. (
–
Check the starter relay.
–
Check the starter motor.
–
Carry out the start procedure.
(
p. 45)
–
Join the plug-in connection of the fuel
line.
–
Adjust the idle speed.
–
Check the fuel tank breather.
–
Clean and dry the spark plug, or
change it if necessary.
–
Adjust the plug gap.
Guideline
Spark plug electrode gap
1.3 mm (0.051 in)
–
Ignition coil - check the primary wind-
ing.
–
Check the spark plug connector.
–
Check the stator winding of the alter-
nator.
–
Check wiring harness (visual check).
–
Check the electrical system.
–
Clean the connector and treat it with
contact spray.
–
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.
–
Change the spark plug.
–
Ignition coil - check the primary wind-
ing.
–
Check the spark plug connector.
–
Check the stator winding of the alter-
nator.
–
Adjust the idle speed.
p. 118)
p. 120)
(
p. 136)
(
p. 136)
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