KTM 250 SX-F 2005, Repair Manual

Page: 88 / 125

7-3
Ignition system
General information
The measurements described below will only detect serious defects.
Short circuits in the coil that lead to a weak ignition spark or poor
generator capacity can be established with the peak voltage adapter
584.29.042.000. In case of a defect, check the cable and the plug
and socket connections in the ignition system first.
Always pay attention to the right measuring range when measuring.
Checking the stator and pulse generator
Use an ohmmeter to take the following measurements:
Measurement Cable colors Resistance
Pulse generator coil red - green 100
Ω
± 20
Ω
Generator charging coil red/black - red/white 32 Ω ± 5 Ω
NOTE: the measurements must be performed at a temperature of 20°
C, otherwise the readings will deviate significantly.
Replacing the stator
– Remove the screw and the retaining bracket.
– Remove the 2 screws
1
and take the stator out of the ignition cover.
– Place a new stator in the ignition cover.
– Degrease the thread of all 3 screws and apply Loctite 243.
– Mount the screws and tighten to 6 Nm.
– Run the wiring harness stress free and fix with the retaining bracket.
Don't forget the cable socket 3.
1