250/300/380 sx,mxc,exc repair manual engine - Tanga Moteurs

Repair manual KTM 250 / 300 / 380 Art No 3206004 -E
110 mm
LOCTITE 243
SEM K11
Ignition (SEM)
General information
The measurements described below will only reveal severe problems. Coil
short circuits leading to weak ignition sparks or low generator output,
respectively, can only be detected with the help of an ignition test bench.
In the case of malfunction always check the cables and the plug and
socket connections of the ignition system first.
Make sure to select the correct measuring range when performing
measurements.
Spark plug
– Set the electrode distance.
Electrode distance: 0.60 mm (0.024 in)
Insulator
Check for cracks and fissures.
! CAUTION !
ALWAYS USE A SPARK PLUG WITH RESISTOR. OTHERWISE PROBLEMS CAN OCCUR IN
THE CDI UNIT.
Check stator (SEM)
Perform the following measurements with an ohmmeter.
+ Pole – Pole Resistance
black red 1,7 kΩ
black green 165 Ω � 20 Ω
green red 1,7 kΩ
yellow yellow 1,0 Ω
5-14C
NOTE: The measuring must be performed at a temperature of 20° C.
Otherwise significant deviations must be expected.
Replace the stator if the measured values deviate significantly from the
setpoint values.