KTM 250 SX-F 2005, Repair Manual

Page: 89 / 125

7-4
Repair manual KTM 250 SX-F
Art.-No. 3.206.027-E
Connecting the peak voltage adapter and setting the multimeter
The peak voltage adapter is equipped with 4 cables: 2 red and 2 black.
One red and one black cable have a measuring tip which - to measure -
is applied to the electric terminals of the components. The two other
cables have plugs that are plugged into the respective sockets on the
multimeter. The red plug is plugged into the socket on the multimeter
marked with a +, V or a red circle
1
.
The black plug must be plugged into the socket marked with a -, Com
or a black circle
2
.
Turn the multimeter on and switch to the range for voltage
measurements - DCV. Depending on the measurement, some
multimeters must be set to the level of voltage to be measured
3
.
! CAUTION !
T
HE PEAK VOLTAGE ADAPTER IS NOT SUITABLE TO MEASURE SECONDARY VOLTAGES
(
THE HIGH
-
VOLTAGE SIDE OF THE IGNITION COIL
). T
HE MEASURING RANGE IS
BETWEEN
0
AND APPROX
. 500
VOLTS
.
  WARNING  
T
O PREVENT AN ELECTRIC SHOCK
,
DO NOT TOUCH METAL PARTS OR THE ENDS OF
THE CONNECTING CABLE WITH YOUR BARE HANDS DURING OR IMMEDIATELY AFTER
MEASURING
.
Check the pulse generator (pick up) for an output signal - two-pole plug
4
with green and red cables (also see circuit diagram on the next
page):
– Apply the red measuring tip of the peak voltage adapter
584.29.042.000 to the green cable and the black measuring tip to
the red cable, disconnect plug
4
to disconnect the CDI unit
5
.
Multimeter display: 4.5 volts +/- 0.5 volt
– Same measurement with CDI unit connected.
Multimeter display: 3 volts +/- 0.5 volt
Check the generator charging coil for ignition capacitor charge - two-
pole plug
6
with black/red and red/white cables (also see circuit
diagram on the next page):
– Apply the red measuring tip of the peak voltage adapter to the
black/red cable and the black measuring tip to the red/white cable,
disconnect plug
6
to disconnect the CDI unit
5
.
Multimeter display: 30 volts +/- 5 volts
– Same measurement with CDI unit connected
Multimeter display: 200 volts +/- 10 volts
Check the primary voltage output
7
for ignition coil control (also see
circuit diagram on the next page) for output voltage (blue/white cable):
– Apply the red measuring tip
R
of the peak voltage adapter to the
black/white cable (ground) and the black measuring tip
S
to the
blue/white cable, CDI unit
5
and ignition coil
8
connected.
Multimeter display: 200 volts +/- 10 volts
Measuring with the peak voltage adapter 584.29.042.000: static ignition values Kokusan 4K-3A
Measuring conditions:
– cold engine
– seat and tank removed
– all plug and socket connectors and the ground connection in a non-corroding condition, plugs tightly connected
– depress the kickstarter forcefully at least 5 times for each measurement
1
2
3
4
6
7
8
R
S