KTM 400-660 LC4 1998-2005, Repair Manual

Page: 159 / 501

Repair manual KTM LC4
Art.-Nr
. 3.206.014 -E
7-48E
1
1
3
4
5
S
R
Check the pulse generator for an output signal – two one-pin
connectors 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: 4.5 volts +/- 0.5 volt
– Same measurement with CDI unit connected
Multimeter display: 3 volts +/- 0.5 volt
NOTE: On 625 SC-models one two-pin connector is used instead of the
two one-pin connectors, the colors of the cable are the same.
Check the generator charging coil for ignition capacitor charge for an
output signal– 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: 30 volts +/- 5 volts
– Same measurement with connectors CDI unit connected
Multimeter display: 180 volts +/- 10 volts
Check the primary voltage output
4
for ignition coil control (also see
circuit diagram on opposite page) for output voltage (blue/white cable
color):
– Apply the red measuring lead
R
of the peak voltage adapter to
ground and the black measuring lead S to the blue/white cable, CDI
unit 2 and ignition coil 5 connected
Multimeter display: 180 volts +/- 10 volts
STATIC IGNITION VALUES 400/620/625 SC / 660 SMC (KOKUSAN 4K-3, 3C)
Measuring conditions:
– cold engine
– seat, right side trim and tank removed
– all connectors and the ground connection in a non-corroding condition, connectors tightly connected
– light switch turned off
– the gap between the rotor and pulse generator must be set to 0.75 mm
– compression release lever pulled
– kick the kick starter forcefully at least 5 times for each measurement