HYOSUNG Aquila GT250 Ej, Service Manual

Page: 90 / 122

89
ELECTRICAL SYSTEM 5-5-1
IGNITION COIL PRIMARY PEAK
VOLTAGE INSPECTION
Remove the fuel tank and frame cover.
Disconnect the two spark plug caps.
With the spark plug cap connected, place a new
spark plug on the engine to ground it.
Measure the No.1 and No.2 ignition coil primary peak
voltage using the tester in the following procedure.
Connect the tester as follows.
NO.1 Ignition coil
Probe : BY lead wire terminal
Probe : Ground
NO.2 Ignition coil
Probe : WL lead wire terminal
Probe : Ground
NOTE
Check that all the couplers are connected.
Check that the all battery is fully charged.
NOTE
Do not disconnect the ignition coil / plug cap lead
wire couplers.
Shift the transmission into the neutral and then
turn the ignition switch to the “ON” position.
Squeeze the clutch lever.
Press the starter switch and allow the engine to
crank for a few seconds, and then measure the
ignition coil primary peak voltage.
Repeat the above procedure a few times and
measure the highest ignition coil primary peak
voltage.
Ignition coil NO.1
Ignition coil NO.2
If the peak voltage is lower than the specified values,
inspect the ignition coil. (Refer to the next page.)
WARNING
While testing, do not touch the tester probes and
spark plugs to prevent receiving an electric shock.
Tester knob indication : Voltage ( )
400 V and more Ignition coil primary peak voltage
Front cylinder Rear cylinder