Static Ignition Values 250-380 Sx, Exc (Kokusan 2K-1, 2K-3, 2K-4) - KTM EXC Repair Manual

7-5C

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
S
R
5
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
1
cable and the black measuring lead to the red cable, disconnect both
connectors
– Same measurement with CDI unit connected
Check the generator charging coil for ignition capacitor charge for out-
put voltage – two-pin connector
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
– Same measurement with connectors CDI unit connected
Check the primary voltage output
cuit diagram on opposite page) for output voltage (blue/white cable
4
color):
– Apply the red measuring lead
black/white cable (ground) and the black measuring lead
blue/white cable, CDI unit
NOTE: the ignition coil does not need to be removed to measure.
1
to disconnect the CDI unit
Multimeter display: 6 volts +/- 1 volt
(250 SX model 2000/2001: 5 volts +/- 1 volt)
Multimeter display: 3 volts +/- 1 volt
(250 SX model 2000/2001: 9 volts +/- 1 volt)
3
with black/red and red/white cable
3 to disconnect the CDI unit
Multimeter display: 35 volts +/- 5 volts
Multimeter display: 200 volts +/- 10 volts
4 for ignition coil control (also see cir-
R
of the peak voltage adapter to the
2
and ignition coil
Multimeter display: 200 volts +/- 10 volts
1
2
2
S
to the
5
connected