Suzuki LT-Z250 Service Manual page 249

Shift the transmission to the neutral position, turn the ignition
switch to the ON position.
Press the starter button and allow the engine to turn for a few
seconds, and then measure the pickup coil peak voltage.
Repeat the above procedure a few times and measure the
highest pickup coil peak voltage.
# Pickup coil peak voltage: 4.0 V and more
( Tester knob indication: Voltage (&)
If the peak voltage measured on the CDI unit coupler is lower
than the standard value, measure the peak voltage on the gen-
erator coupler as follows:
Remove the left fuel tank side cover. (!7-5)
Disconnect the generator coupler and connect the multi circuit
tester with the peak volt adaptor as follows.
Pickup coil: + Probe...Green/White lead wire
- Probe...Blue/Yellow lead wire
Measure the pickup coil peak voltage in the same manner as on
the CDI unit coupler.
# Pickup coil peak voltage: 4.0 V and more
( Tester knob indication: Voltage (&)
If the peak voltage on the generator coupler is within the specifi-
cation, but on the CDI unit coupler is not within specification,
replace the wire harness with a new one. If both peak voltages
are out of specification, replace the generator with a new one.
PICKUP COIL RESISTANCE
Remove the left fuel tank side cover. (!7-5)
Disconnect the generator coupler.
Measure the resistance between the lead wires using the multi
circuit tester. If the resistance is not within the specified value,
stator coil must be replaced.
# Pickup coil resistance: 80
$ 09900-25008: Multi circuit tester set
( Tester knob indication: Resistance (Ω Ω Ω Ω )
155 Ω Ω Ω Ω (B/Y
G/W)
ELECTRICAL SYSTEM
Peak volt adaptor
B/Y
G/W
Generator
Pickup coil
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