Ignition System; Spark Plug; Ignition Timing - Sym Symply50 Service Manual

2. MAINTENANCE INFORMATION

IGNITION SYSTEM

Ignition timing

Caution
C.D.I ignition system is set by manufacturer
so it can not be adjusted.
Ignition timing check procedure is for
checking whether C.D.I. function is in normal
or not.
Remove ignition timing hole cap located on
the cooling fan cap, or remove the cooling
fan cap.
Check ignition timing with ignition light.
Start engine and set engine idle speed in
1700 rpm, and if the mark aligns with the "F",
then it means that ignition timing is correct.
Increase engine speed to 8000 rpm to check
ignition timing advance. If the detent aligns
with advance mark "‫ ,"װ‬then it means ignition
timing advance is in functional. If not,
check CDI set, pulse flywheel, and pulse
generator. Replace these components if
malfunction of these parts are found.

SPARK PLUG

Appointed spark plug: TORCH A7RC
Remove luggage box.
Remove center cover.
Remove spark plug cap.
Clean dirt around the spark plug hole.
Remove spark plug.
Measure 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 the park plug into the plug hole with
hands, then tighten the plug with a wrench to
prevent from damaging the spark plug's
thread.
Torque value: 1.0~1.4 kgf-m
Connect spark plug cap.
2-8
Ignition light
Spark plug
Side electrode
Center electrode
0.6~0.7mm
SYM
F mark