Spark Plug Service - Honda GCV520 Owner's Manual

SPARK PLUG SERVICE

Recommended spark plugs:
Incorrect spark plugs can cause engine damage.
1. Disconnect the spark plug caps, and remove any dirt from around
the spark plug area.
2.
Remove the spark plugs with a 13/16-inch spark plug wrench.
3. Inspect the spark plugs. Replace
them if the electrodes are worn,
or if the insulator is cracked or
chipped. Clean the spark plugs
with a wire brush if you are going
to reuse them.
4. Measure the spark plug electrode
gap with a suitable gauge. The
g a p s h o u l d b e 0.028
(0.70 0.80 mm). Correct the gap, −
if necessary, by carefully bending
the side electrode.
5. Install the spark plug carefully, by
hand, to avoid cross-threading.
SERVICING YOUR ENGINE
BPR5ES (NGK)
W16EPR-U (DENSO)
0.028 0.031 in
(0.70 0.80 mm)
− 0.031 i n
SPARK PLUG WRENCH
−
−
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