ENGLISH
24
CAUSE
operating error
blown main fuse
discharged battery
defective ignition lock or emer-
gency OFF switch
emergency OFF switch is set to
wrong position. is visible.
defective emergency OFF switch
empty fuel tank
fuel contaminated with water or
dirt
float is not tight or defective
air filter is extremely dirty
interrupted fuel supply
flooded engine
sooty or wet spark plug
electrode gap too large
worn electrodes
defective spark plug
defective spark plug connector
oxidized connectors of CDI unit,
pulse generator, or ignition coil
defective pulse generator coil
water in carburetor, or clogged jets
carburetor not fitted properly at
intake flange
clogged idling jet
incorrect adjustment of adjusting
screws on carburetor
defective ignition system
REMEDY
switch on ignition
replace main fuse
recharge battery, and determine cause of discharge, consult
an authorized KTM dealer
check ignition lock and emergency OFF switch
consult an authorized KTM dealer
position emergency OFF switch such that is visible.
disconnect 4-pole connector of emergency OFF switch
(underneath the headlamp mask). Shift to 2nd gear and push
your motorcycle. If the engine starts now, the emergency
OFF switch needs to be replaced.
refuel your vehicle
dismount fuel tank, carburetor, and fuel lines. Rinse out fuel
tank with pure fuel. Clean carburetor with pure fuel and
compressed air.
replace float
clean or replace air filter
check function of tank ventilation, clean fuel tap
for procedure see driving instructions
clean or replace spark plug
adjust electrode gap to 0.7 mm
replace spark plug
remove spark plug, connect ignition cable, hold spark plug to
ground (bare spot on engine) and actuate starter, a strong
spark must be producted at the spark plug. If this is not the
case, the ignition system must be checked
disconnect spark plug connector from ignition cable, hold it
about 5mm away from ground and actuate starter. If there is
no spark, have ignition system checked.
remove seat and fuel tank, clean connectors and treat them
with contact spray
have ignition system checked
dismount and clean carburetor
check carburetor for correct fit
disassemble carburetor and clean jets
have carburetor adjusted
have ignition system checked
TROUBLE
Engine does not crank
Engine cranks but fails to
start
Engine fails to idle
TROUBLE SHOOTING
If you let the specified maintenance work on your motorcycle be carried out, disturbances can hardly be expected. Should an error
occur nevertheless, we advise you to use the trouble shooting chart in order to find the cause of error.
We would like to point out that many operations cannot be performed by the rider himself. In case of uncertainty, please contact a
KTM-dealer.
Summary of Contents for 125 LC2 1998
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