TROUBLESHOOTING
68
7528%/(6+227,1*
Faults
Possible cause
Measure
The engine cannot be cranked (electric
starter).
Battery discharged
ದ
Recharge the battery.
b
x
(
P. 53)
ದ
Check the cause of discharging.
Fuse blown
ದ
Remove the fuse. (
P. 54)
ದ
Replace the fuse. (
P. 54)
Engine turns but does not start.
Operating error
ದ
Perform the steps necessary to start
the engine. (
P. 15)
Motorcycle was out of use for a long time
and there is old fuel in the float chamber
ದ
Empty the carburetor float chamber.
b
x
(
P. 64)
Fuel feed interrupted
ದ
Check the fuel tank breather.
ದ
Clean fuel tap.
ದ
Clean carburetor.
Engine flooded
ದ
Clean and dry the spark plug or replace
if necessary.
Spark plug oily or wet
ದ
Clean and dry the spark plug or replace
if necessary.
Electrode distance (plug gap) of spark
plug too wide
ದ
Adjust plug gap.
Specification
spark plug electrode gap
0.7
b
mm (0.028
b
in)
Spark plug connector or spark plug defec-
tive
Warning
Risk of injury
ಘ
The ignition sys-
tem is under high voltage.
ದ
Do not touch parts of the
ignition system. Have work
on the ignition system car-
ried out in an authorized
KTM workshop.
ದ
Remove spark plug, connect ignition
cable, hold spark plug to ground (bare
metal area on engine), and try to start
the engine.
Specification
You should see a strong spark on the
spark plug.
ದ
If there is no spark, change the spark
plug.
ದ
If there is still no spark, remove the
spark plug cap from the ignition cable,
hold it at the specified distance from
the ground contact, and try to start the
engine.
Specification
5
b
mm (0.2
b
in)
ದ
If you now have a spark, replace the
spark plug connector.
ದ
If there is no spark, have the ignition
system checked.
Short-circuit cable in wiring harness
chafed, short-circuit button defective
ದ
Check wiring harness. (visual check)
ದ
Check electrical system.
Socket connector of CDI control device,
pulse generator or ignition coil oxidized.
ದ
Clean socket connector and treat it
with contact spray.
Water in carburetor or jets blocked
ದ
Clean carburetor.
Engine has no idle.
Idling jet blocked
ದ
Clean carburetor.
Adjusting screws on carburetor distorted
ದ
Have the carburetor adjusted.
Spark plug defective
ದ
Change spark plug.
Ignition system defective
ದ
Have ignition system checked.