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Honda H4514H Owner's Manual page 61

Honda lawn mower user manual

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SPARK PLUG SERVICE
Recommended
spark plug: BPRQHS
(NGK)
W14FPR-UL
(DENS01
m
Touching
a hot engine
or exhaust
system
can cause
serious
burns.
Let the engine
cool before
performing
maintenance.
/%%%%-I
Spark plugs of the wrong heat range can cause engine damage.
For good
performance,
the spark plugs
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.
SPARK PLUG
WRENCH
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 0.6-0.7
mm
(0.024-0.028
in).
Correct
as
necessary
by carefully
bending
the side electrode.
0.6-0.7
mm
(0.024-0.028
In1
59

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