Ignition System€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€€2 - Sym Citycom.300i Service Manual

Ignition System
Caution
 Ignition system is set by the manufacturer so
it can not be adjusted.
 Ignition timing check procedure is for
checking whether CDI function is normal or
not.
Remove right side cover.
Remove ignition timing inspection cap located on
the right cover of the engine.
Connect the tachometer and the ignition timing
light.
Start the engine.
Keep the engine at 2,500 rpm; check the "F" mark
with the ignition timing light and see if it aligns with
the timing mark.
If so, it means that ignition timing is correct.
Increase engine speed to 6,000 rpm to check
ignition advance degree. If the timing is located
within the ignition advance degrees, it means that
the ignition advance degree is correct.
If the ignition timing is incorrect, check ECU,
flywheel and crankshaft position sensor.
Replace it if the malfunction of these parts is
found.
Spark Plug
Recommended spark plug: NGK CR8E
Remove the luggage box.
Remove the central cover.
Remove the spark plug cap.
Clean dirt around the spark plug hole.
Remove the spark plug.
Measure the spark plug gap.
Spark plug gap: 0.6~0.7 mm
Carefully bend ground electrode of the plug to
adjust the gap if necessary.
Screw in the spark plug by hand in order to avoid
the damage of the spark plug.
Then tighten it by a spark plug socket wrench.
Tighten torque: 1.0~1.2kgf-m
Install the spark plug cap.
To this chapter contents
Ground electrode
0.6~0.7mm
2. Maintenance Information
Central electrode
Insulator
Spark plug
2-7