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Always use only recommended make and type of spark
plug.
Replace 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.
Caution
5. Pull out the suppressor cap from spark plug.
Using the spark plug spanner, remove the spark
plug.
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
new. Visually inspect the spark plug gap. The gap
should be
0.9 ~ 1.0 mm
for
UR5KCW
and
1.0 ~
1.1 mm
for
UR5KCU
. If the gap is found to be more
than the limit replace the spark plug with a new one.
After cleaning and inspecting the gap, reinstall
the spark plug and tighten by hand to avoid cross
threading. Finally tighten using spark plug spanner.
Do not over tight or cross thread the spark plug.
A
0.9 ~ 1.0 mm /
1.0 ~ 1.1 mm
B
