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21 TROUBLESHOOTING
Faults
The engine cannot be cranked
(starter motor)
The engine turns but does not
start
The engine has no idle speed
154
Possible cause
Operating error
12-V battery discharged
Main fuse is blown
Starter relay faulty
Starter motor faulty
Operating error
Quick release coupling not
joined
Idle speed is not set correctly
Fuel supply interrupted
Spark plug oily or wet
Plug gap of spark plug too wide
Faulty ignition
Short-circuit cable in wiring
harness frayed, switch-off but-
ton or emergency OFF switch
faulty
The connector or ignition coil is
loose or oxidized
Error in the electronic fuel
injection
Spark plug defective
Faulty ignition
Idle speed is not set correctly
Action
–
Carry out the start procedure.
(
p. 44)
–
Charge the 12-V 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. 44)
–
Join quick release coupling.
–
Adjust the idle speed.
–
Check the fuel tank breather.
–
Clean and dry the spark plug, or
change it if necessary.
–
Adjust plug gap.
Guideline
Spark plug electrode gap
0.6 mm (0.024 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 wiring for damage and electrical
plug-in connectors for corrosion 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. 120)
p. 122)
(
p. 137)
(
p. 137)
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