KTM KTM250 SX Automobile Parts User Manual


 
7-5C
Static ignition values 250-380 SX, EXC (except 250 USA)
Check the pulse generator for an output signal – two-pin connector 1
with green and red cable colors (also see circuit diagram on opposite
page):
Apply the red measuring lead of the peak voltage adapter to the green
cable and the black measuring lead to the red cable, disconnect both
connectors
1 to disconnect the CDI unit 2
Multimeter display: 6 volts +/- 1 volt
(250 SX model 2000/2001: 5 volts +/- 1 volt)
Same measurement with CDI unit connected
Multimeter display: 3 volts +/- 1 volt
(250 SX model 2000/2001: 9 volts +/- 1 volt)
Check the generator charging coil for ignition capacitor charge for out-
put voltage – two-pin connector
3 with black/red and red/white cable
colors (also see circuit diagram on opposite page):
Apply the red measuring lead of the peak voltage adapter to the
black/red cable and the black measuring lead to the red/white cable,
disconnect connector
3 to disconnect the CDI unit 2
Multimeter display: 35 volts +/- 5 volts
Same measurement with connectors CDI unit connected
Multimeter display: 200 volts +/- 10 volts
Check the primary voltage output
4 for ignition coil control (also see cir-
cuit diagram on opposite page) for output voltage (blue/white cable
color):
Apply the red measuring lead
R of the peak voltage adapter to the
black/white cable (ground) and the black measuring lead
S to the
blue/white cable, CDI unit
2 and ignition coil 5 connected
Multimeter display: 200 volts +/- 10 volts
NOTE: the ignition coil does not need to be removed to measure.
STATIC IGNITION VALUES 250-380 SX, EXC (KOKUSAN 2K-1, 2K-3, 2K-4)
Measuring conditions:
cold engine
seat and tank removed
all connectors and the ground connection in a non-corroding condition, connectors tightly connected
spark plug screwed out and spark plug connector attached to ground
light switch turned off
the gap between the rotor and pulse generator must be set to 0.75 mm
kick the kick starter forcefully at least 5 times for each measurement
3
1
1
5
4
S
R