4
11
4.20 Ignition (Kokusan)
General information
The measurements described below will only reveal severe problems. Coil short cir-
cuits leading to weak ignition sparks or low generator output, respectively, can only
be detected with the help of an ignition test bench. In the case of malfunction
always check the cables and the plug and socket connections of the ignition system
first.
Make sure to select the correct measuring range when performing measurements.
4.20.1 Spark plug (NGK BR 8 ECM)
– Set the electrode distance.
E
LECTRODE DISTANCE
: 0.60
MM
(0.024
IN
)
I
NSULATOR
Check for cracks and fissures.
!
CAUTION
!
A
LWAYS USE A SPARK PLUG WITH RESISTOR
. O
THERWISE PROBLEMS CAN OCCUR IN THE
CDI
UNIT
.
4.20.2 Check stator and pulse generator (Kokusan)
Use an ohmmeter to perform the following measurements:
N
OTE
: T
HE MEASURING MUST BE PERFORMED AT A TEMPERATURE OF
20° C. O
THERWISE SIG
-
NIFICANT DEVIATIONS MUST BE EXPECTED
.
R
EPLACE THE STATOR IF THE MEASURED VALUES DEVIATE SIGNIFICANTLY FROM THE SETPOINT
VALUES
.
I
GNITION
M
EASURE
C
ABLE COLOURS
R
ESISTANCE
2K-1
Pulser coil
red – green
100
Ω
20%
Exciter
black/red – red/white
25
Ω
20%
2K-2
Pulser coil
red – green
100
Ω
20%
Exciter
black/red – red/white
25
Ω
20%
Charge coil
ground – yellow
0,75
Ω
20%
Kokusan 2K-1
Kokusan 2K-2
LOCTITE 242
LOCTITE 242
2K-1
2K-2
Summary of Contents for 250 1998
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