36
Spark plug
After the first 1000 km and every 3000 km thereafter, clean off any carbon
deposit from spark plug by using a small steel wire brush or a spark plug cleaner.
Readjust the spark plug gap with a thickness feeler to keep it between 0.6 - 0.8
mm. Replace spark plug every 6000 km.
When cleaning off carbon deposit, observe the color of the ceramic tip of spark
plug. The color can tell you if standard spark plug suit your usage. If a standard
spark plug shows wet or very dark, it may be better to use a spark plug with
lower caloric value. A normal working spark plug shall be light gray or cotton
yellow. If a spark plug is very white or even glowing, it means the spark plug was
working in overheated conditions. Replace it with a spark plug of higher caloric
value.
Standard spark plug for the motorcycle is carefully selected and suitable for
most operations. If the color of spark plug is found different from standard spark
plug, it is advisable to contact your distributor before replacing with spark plug
in a different heat resisting range. An improper spark plug may cause serious
damage to the engine. A spark plug of other brand may result in operational
difficulties. Therefore, consult with your distributor before selecting other brand
spark plug.
Precaution
Spark plug shall not be over tightened to prevent the threads of cylinder
head from being damaged. When spark plug is removed, prevent any
impurities from getting into the engine through spark plug hole.
Summary of Contents for Two Fifty 250 cc
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