KTM 125 SX 2010, Owner'S Manual

Page: 307 / 899

3
4
S
R
1
7-15
Measuring conditions:
– cold engine
– seat and tank removed
– all connectors and the ground connection in a non-corroded condition and connectors tightly connected
– spark plug unscrewed 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
Static ignition values
Check the pulse generator for output signal - 4-pole plug
1
with cable
colors green, red, black/red and red/white (also see wiring diagram on
opposite page):
– Apply the red measuring tip of the peak voltage adapter to the green
cable and the black measuring tip to the red cable, disconnect plug
1
to disconnect the CDI unit
2
Multimeter display: 3.5 volts ± 1 volt
– Take the same measurement with the CDI unit connected
Multimeter display: 2 volts ± 0.5 volt
Check the generator charging coil for ignition capacitor charge and
output voltage - two-pin connector
3
with green, red, 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: 45 volts ± 5 volts
– Take the same measurement with the CDI unit connected
Multimeter display: 220 volts ± 10 volts
Check the
primary voltage
output
3
for ignition coil control (also see
circuit diagram on opposite page) and 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
4
connected
Multimeter display: 210 volts ± 10 volts
NOTE: The ignition coil does not need to be removed to take a measu-
rement.
Static generator values 250
Check the generator output
5
for the lighting system (also see circuit
diagram on opposite page) for voltage:
– between yellow and brown (ground), connector disconnected
Multimeter display: 10.5 volts ± 1 volt
STATIC IGNITION AND GENERATOR VALUES
250 EXC USA (KOKUSAN 2K-2) 2005
250 XC/XC-W (KOKUSAN 2K-2) 2006