KYMCO MX’er 125 Service Manual page 193

15
. IGNITION SYSTEM
Measure the resistance between the ignition coil
primary coil terminals.
Resistance: 0.2 0.3Ω/20
Remove the spark plug cap and measure the
secondary coil resistance between the spark
plug wire and the primary coil terminal.
Resistance: 3.2 4.8KΩ/20
*
This test is for reference only. Accurate test
should be performed with a CDI tester.
Measure the spark plug cap resistance.
Remove the spark plug cap and measure the
spark plug resistance.
Resistance: 4.2 5.2KΩ/20
*
Measure the resistance in the XKΩ range
of the electric tester.
PERFORMANCE TEST
Test the performance with a CDI tester.
*
• Operate the CDI tester by following the
manufacturer's instructions.
• Use the special connector to connect the
CDI unit.
If the spark is weak, inspect the spark plug and
CDI unit. If both of them are normal, replace
the ignition coil with a new one.
Ignition Coil
PULSER COIL
INSPECTION
Remove the front cover.
Disconnect the pulser coil wire coupler and
measure the resistance between the blue/
yellow and green/white wire terminals.
Resistance: 50 60Ω
MX'er SYSTEM
15-6