Ignition - General Information; Spark Plug; Check Stator And Pulse Generator - KTM 125 Repair Manual

5-19C
Kokusan 2K-1
Kokusan 2K-2
Kokusan 2K-3
Ignition
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.
The CDI unit can be checked only on the ignition test bench.
LOCTITE 243
2K-1

Spark plug

LOCTITE 243
Insulator
Check for cracks and fissures.
2K-2
A
LWAYS USE A SPARK PLUG WITH RESISTOR
THE
LOCTITE 243
2K-3

Check stator and pulse generator

Use an ohmmeter to perform the following measurements:
Ignition
NOTE: The measuring must be performed at a temperature of 20° C.
Otherwise significant deviations must be expected.
Replace the stator and/or the pulse generator if the measured values
deviate significantly from the setpoint values.
Electrode distance: 0.60 mm (0.024 in)
! CAUTION
CDI .
UNIT
Measure
Pulser coil
2K-1
Exciter
Pulser coil
2K-2 Exciter
Charge coil
Pulser coil
Exciter
2K-3
Charge coil
!
. O
THERWISE PROBLEMS CAN OCCUR IN
0,60 mm
cable colours Resistance
red – green 100 Ω
black/red – red/white 24,8 Ω
red – green 100 Ω
black/red– red/white 24,8 Ω
ground – yellow 0,74 Ω
red – green 100 Ω
black/red – red/white 12,7 Ω
ground – yellow 0,65 Ω
white – yellow 0,16 Ω
20%
20%
20%
20%
20%
20%
20%
20%
20%