Generic Race 50, Service Manual

Page: 84 / 209

83
2.3 Ignition system inspection
*Attention
•When there is no spark in the spark plug
，
inspect whether
the wire or part is loosen or in poor contact and confirm
whether each voltage value is normal.
•Since there are a great many of avometer brands with
different interior resistance, the values tested will differ
accordingly.
Connect the avometer with a high voltage diverter or an
electric meter with input resistance above 10M
Ω 10CV.
2.3.1 Primary voltage of ignition coil
Replace the spark plug with a good one and connect it with the engine.
*Attention
Correctly connect each circuit before the test.
Normal compression pressure of the air cylinder is
achieved in the test when the spark plug is installed on
the cylinder head.
Connect the wire of ignition coil and connect the primary
coil terminal
（
black / white
）
with the diverter at the Ground.
Press the startup electrical machinery or step on the
actuating lever to measure the primary peak voltage of the
ignition coil.
Minimum voltage
：
95 V or above.
*Attention
The metal area of the avometer prod mustn't be touched
by fingers to prevent electroshock.
Remove the 4P and 2P joint of CDI group, and connect a
High Voltage diverter between the charge coil of the 2P joint
（
red / white terminal
）
to the wire and the 4P joint
（
black
terminal
）
.
Press the startup motor or step on the actuating lever to
measure the peak voltage of the charge coil.
万用表
Multimeter
点火线圈
万用表
Multimeter
Ignition coil
Black
CDI Group
Blue/white