Mash Fifty 50 CC, User Manual

Page: 37 / 66

37
Spark plug
After the first 1.000 km and every 3.000 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 6.000 km.
When cleaning off carbon deposit, observe the color of the ceramic tip of spark
plug. 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.
Standard spark plug for the motorcycle is carefully selected and suitable for
most operations. If the color of the 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.
Precaution
The spark plug should not be over tightened to prevent the threads of
cylinder head from being damaged. When the spark plug is removed, prevent
any impurities from getting into the engine through spark plug hole.