Honda H5518H Owner's Manual page 88

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5. Spark
plug
service
Recommended
spark
plug:
BPRSES-11
(NGK)
WlGEPR-Ull
(DENSO)
m
Touching
a hot engine
or exhaust
system
can cause
serious
burns.
Let the engine
cool before
performing
maintenance.
m
Spark
plugs
of the wrong
heat range can cause engine
damage.
For good performance,
the spark plug must be properly
gapped
and free of
deposits.
1. Open the engine
hood and remove
the spark
plug caps.
2. Clean
any dirt from around
the spark
plug bases.
3. Use a spark
plug wrench
to remove
the spark
plugs.
v
WRENCH
SP>K
PLUG
4. Visually
inspect
the spark
plugs.
Discard
the spark
plugs if there is ap-
parent
wear,
or if the insulators
are cracked
or chipped.
Clean the spark
plugs
with
a wire
brush
if they
are to be reused.
5. Measure
the plug gaps with
a feeler
gauge.
The
gaps
should
be
1.0-1.1
mm
(0.039-0.043
in).
Correct
as
necessary
by carefully
bending
the side electrode.
1.0-1.1
mm
(0.039-0.043
inl
86

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