KTM 250 EXC 2023 User Manual

21 TROUBLESHOOTING
154
Faults Possible cause Action
The engine cannot be cranked
(starter motor)
Operating error – Carry out the start procedure.
( p. 44)
12-V battery discharged – Charge the 12-V battery. ( p. 119)
– Check the charging voltage.
– Check the closed current.
– Check the stator winding of the alter-
nator.
Main fuse is blown – Change the main fuse. ( p. 121)
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.
( p. 44)
Quick release coupling not
joined
– Join quick release coupling.
Idle speed is not set correctly – Adjust the idle speed. ( p. 137)
Fuel supply interrupted – Check the fuel tank breather.
Spark plug sooty or wet – Clean and dry the spark plug and spark
plug connector, or change 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, stop button 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.
Malfunction in the electronic
fuel injection
– Check wiring for damage and electrical
plug-in connectors for corrosion and
damage.
– Read out the fault memory using the
KTM diagnostics tool.
The engine has no idle speed 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. ( p. 137)
Engine does not speed up Malfunction in the electronic
fuel injection
– Check wiring for damage and electrical
plug-in connectors for corrosion and
damage.
– Read out the fault memory using the
KTM diagnostics tool.

KTM 250 EXC 2023 Specifications

General

Brand	KTM
Model	250 EXC 2023
Category	Motorcycle
Language	English