Ignition System; Ignition Timing; Spark Plug - Sym PA12B Service Manual

2. Maintenance Information

Ignition System

Ignition timing

Caution:
C.D.I ignition system is set by
manufacturer so it cannot be adjusted.
Ignition timing check procedure is for
checking whether CDI function is
normal or not.
Remove ignition timing hole cap located in
front upper side of crankcase left cover.
Connect tachometer and ignition lamp and
start the engine.
When engine runs in idle speed, if the "F"
mark meets with the ignition lamp. Then, it
means that ignition timing is correct.
Increase engine RPM to check ignition
advance degree. If the illustrated indent is
within the ignition advance degrees, it means
that the ignition advance degree is in normal.
If ignition timing is incorrect, check CDI set,
pulse rotor and pulse generator. Replace
defective parts if malfunction is found.
Standard idle：1500±100rpm
Ignition Advance：4000±100rpm

Spark Plug

Recommended spark plug: D7EA
Remove spark plug cap.
Clean dirt around the spark-plug hole.
Remove spark plug.
Measure spark plug ignition gap.
Spark plug gap：0.6~0.7 mm
Carefully bend ground electrode of the plug to
adjust the gap if necessary.
Hold spark plug and install the spark plug by
screwing it with hand, after tightening the plug
by hands, use plug socket to tighten it to the
standard torque value.
Standard torque：1.0~1.2kgf-m
2-10
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Re- install the spark plug cap.
"F" Mark
Ignition advance indent "‫"װ‬
Ground electrode
0.6~0.7mm
Center electrode
Spark plug cap