KTM 125 SX 2010, Owner'S Manual

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STATIC IGNITION VALUES 250 SX, 250-300 EXC/MXC (KOKUSAN 2K-1, 2K-3) 2004
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 250 SX, 250-300 MXC/EXC (except 250
EXC 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, dis-
connect both connectors
1
to disconnect the CDI unit
2
Multimeter display: 6 volts ± 1 volt
(250 SX: 5 volts ± 1 volt)
– Take the same measurement with the CDI unit connected
Multimeter display: 3 volts ± 1 volt
(250 SX: 9 volts ± 1 volt)
Check the generator charging coil for ignition capacitor charge and
output 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
– Take the same measurement with the CDI unit connected
Multimeter display: 200 volts ± 10 volts
Check the primary voltage output
4
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
5
connected
Multimeter display: 200 volts ± 10 volts
NOTE: The ignition coil does not need to be removed to take a measu-
rement.