Repair manual KTM LC4
Art.-Nr
. 3.206.014 -E
9-4E
TROUBLE
Engine will not start
Engine will not idle
CAUSE
Operating error
The motorcycle has been out of
operation for a longer period of
time. Therefore the float chamber
is filled with old fuel.
Fuel supply interrupted
Flooded engine
Sooty or wet spark plug
Electrode gap too large
Spark plug connector or spark plug
faulty
If connector oxidates from
generator to ignition coil
Short circuit cable scored in wiring
harness, ignition lock, emergency
OFF switch faulty
Water in short emergency OFF
switch
Water in carburetor or jets blocked
Carburetor does not fit in properly
at intake flange
Idling jet blocked
Adjusting screws on carburetor
uncorrect adjusted
Spark plug faulty
Ignition system faulty
REMEDY
Switch on ignition, switch on emergency OFF switch, open
fuel tap, tank fuel, do not use choke i.e. the hotstart device.
Pay attention to starting off information (see driving
instructions).
The easily inflammable components of the new fuels
evaporate during longer periods of standstill. When the
motorcycle has been out of operation for more than a week,
it is therefore recommended to drain the old fuel from the
float chamber. The engine will immediately start off when the
float chamber is filled with new fuel.
Close fuel tap, loosen fuel hose at carburetor, lead into a
basin and open fuel tap,
– if fuel leaks out, clean carburetor
– if no fuel leaks out, check tank ventilation, i.e. clean fuel
tap
Fully open the throttle when starting or replace the spark
plug, respectively.
Clean / dry or replace spark plug.
Adjust spark plug electrode gap to 0,7 mm
Dismount spark plug, connect ignition cable, hold to ground
(blank place on engine) and actuate kickstarter, a strong
spark must be produced at the spark plug
– If no spark is created exchange the spark plug.
– If the new spark plug doesn’t produce a spark either,
disconnect the spark plug connector from the ignition
cable, hold it approx. 5 mm from ground and start.
– If a spark now occurs, replace spark plug cap
– If no spark is produced, control ignition system
Remove fuel tank, clean connector and treat with contact
spray
Remove fuel tank, draw off blue/black cable from orange
cable of ignition coil and check spark.
– If a spark is produced, seek fault in short circuit current
Remove 2-pole connector located underneath the headlight
mask, treat emergency OFF switch with contact spray
Dismount and clean carburetor
Check if carburetor is fitted in correctly
Dismount carburetor and clean jets
Adjust carburetor
Exchange the spark plug
Check ignition system
TROUBLE SHOOTING – LC4 COMPETITION
Содержание 400-660 LC4 1998-2005
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