TVS Scooty Zest User Manual page 48

A spark plug with heavy carbon deposits will not
produce strong sparks. Hence, only if necessary,
clean the carbon deposits from the spark plug with a
small wire brush or spark plug cleaning tool.
Inspect the spark plug electrodes (A) and (B) for
any corrosion. If found any, replace the spark plug
with a new. Inspect the spark plug gap with a wire
gauge / feeler gauge. Readjust the spark plug gap to
0.9 ~ 1.0 mm / 1.0 ~ 1.1 mm if required.
After cleaning and adjusting the gap, reinstall the
spark plug and tighten by hand to avoid cross
threading. Finally tighten using spark plug spanner.
A
B
0.9 ~ 1.0 mm /
1.0 ~ 1.1 mm
Always use only recommended make and type of spark
plug. Replace the spark plug every 12000 km.
Don't remove the spark plug when the engine is hot.
Cover the spark plug hole with a cloth when the plug is
removed to prevent entry of dust / water.
Do not try to adjust the spark plug as it may damage the
plug. Replace the plug if the gap is found more.
It is advisable to tighten the new spark plug by hand till
the end, using plug spanner tighten by 1/4 turn. Then
loosen the plug by 1/8 turn and re-tighten using plug
spanner.
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