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SEM ignition that fitted KTM400LC4 - 1996 to 2002



Flywheel and stator on right side of the bike.



right side



Oscillogrammes.


red charging coil = 200Vac
green pickup coil = +/-6Vac
black frame ground
yellow lighting coil
blue lighting coil

Cliquer sur les fils
yellow= 12Vac12Vacgreen= pickupgreen= pickupred= charging coilred= charging coilred= charging coil

Click on wire to visualize the signal available on this wire, when the engine idles...

Pictures

Inside the stator

ZoomZoom

Thanks to Zoli Bihari

Stator.


Resistances map.


OHMs Red green black yellow blue
red 1777 1754    
green 1777 23    
black 1754 23    
yellow       0,2
blue       0,2


Ignition coil

It's not a simple coil!
There are some electronics inside...The "black box" is part of the coil

red charging coil = 200Vac
green pickup coil = +/-6Vac
black frame ground
orange handelbar kill switch



Schematic.



Orange "BLACK BOX" from a KTM 620LC4 - 1997



Synchronisation.



Notes.

LC4 kick start mit SEM zundspule
+ Pol - Pol Meßwert
Zündspule rot schwarz 47k
rot grün 47k
rot orange 0 Ohm
schwarz Zündkabel 2,0KOhm/+- 0,3k
Stator schwarz rot 1,7kOhm
schwarz grün 23Ohm +- 5 Ohm
rot grün 1,7kOhm
gelb/gelb blau 0,2Ohm
-------------------------------------------------

LC4 kick start mit SEM zundspule(ignition coil) until 1998
+ Pol - Pol Meßwert
Zündspule rot schwarz 47k
rot grün 47k
rot orange 0 Ohm
schwarz Zündkabel 2,0KOhm/+- 0,3k
Stator schwarz rot 1,7kOhm
schwarz grün 165Ohm +- 20 Ohm
grün rot 1,7kOhm
gelb gelb 1Ohm

------------------------------------------------------

LC4 electric start mit KOKUSAN
Impulsegeberspule rot grun 100ohm +-20%
stator schwarz/rot rot/weiss 12,7ohm +-20%
ladespule masse/gelb 0,65ohm +-20%
ladespule weiss/gelb 0,16ohm +-20%

------------------------------------------------------

LC4 kick start mit KOKUSAN super comper 1999-2003
Impulsegeberspule weiss grun 60 -120ohm
stator rot/schwarz-gelb 0,45 - 0,56ohm
stator schwarz/rot-rot/schwarz 0,45 - 0,56ohm

------------------------------------------------------

Zundspule(ignition coil) KOKUSAN
Primaire blau/weis - masse 0,45 - 0,56ohm
secondaire blau/weis - zundkabel 0,45 - 0,56ohm