KYMCO ADG5, Manual, Page: 46 / 426

2.Periodic Maintenance XCITING S 400
Check the spark plug to see if it is the correct type and gapped properly. If the spark
plug is black and fouled, replace it.
If the spark plug center electrode or side electrode are corroded or damaged,
or if the insulator is cracked, replace the plug.
Measure the gap with a wire-type thickness gauge.
If the gap is incorrect, replace the spark plug.
Always check the gap of the spark plug before installation. Inspect the color of the
porcelain nose of the spark plug. The color of the spark plug can indicate how the
mixture is burning. A white colored plug shows a lean mixture, where a dark plug
shows a rich mixture. Do not hesitate to replace a spark plug. Always replace a
spark plug if any part of it is damaged.
Spark plug gap 0.7 - 0.8 mm
Do not over tighten the spark plug. The cylinder head is made out of soft metal, and
it can be easily damaged.
Item Torque
Spark plug 8 - 12 N-m ( 0.8 – 1.2 kgf-m)
9-26