6-18 ELECTRICAL SYSTEM
INSPECTION
IGNITION COIL PRIMARY PEAK VOLTAGE
• Remove the spark plug cap
1
.
• Connect a new spark plug
2
to the spark plug cap and
ground it on the cylinder head.
NOTE:
Make sure that the spark plug cap and spark plug are connected
properly.
Measure the ignition coil primary peak voltage using the
multi-circuit tester in the following procedure.
• Connect the multi-circuit tester with the peak volt adaptor as
follows.
+
Probe: Black/White lead wire
-
Probe: Black/Yellow lead wire
NOTE:
Do not disconnect the ignition coil lead wires.
\
09900-25008: Multi-circuit tester set
• Turn the ignition switch to the “ON” position.
• Push the starter button and allow the engine to crank for a few
seconds, and then measure the ignition coil primary peak volt-
age.
• Repeat the above procedure a few times and measure the
highest ignition coil primary peak voltage.
W
Tester knob indication: Voltage (
)
Ignition coil primary peak voltage: 150 V and more
#
If the voltage is lower than the specified values, inspect the igni-
tion coil. (
6-19)
Before using the multi-circuit tester and peak volt
adaptor, be sure to refer to the appropriate instruction
manual.
CDI
unit
New
spark plug
Peak volt adaptor
B
/
W
B
/
Y
While testing, do not touch the tester probes and
spark plug to prevent receiving an electric shock.