HONDA GX620 - Manual (Page 10)

ENGLISH
SPARK PLUG
Recommended Spark Plugs:
FUEL FILTER
Inspection
FUEL FILTER
SPARK PLUG
WRENCH
SPARK PLUG CAP
0.7 0.8 mm
(0.028 0.031 in)
SEALING
WASHER
10
ZGR5A (NGK)
J16CR-U (DENSO)
For good performance, the spark plugs must be properly gapped
and free of deposits.
The recommended spark plugs have the correct heat range for
normal engine operating temperatures.
Incorrect spark plugs can cause engine damage.
Remove the spark plugs with a 13/16-inch spark plug wrench.
Inspect the spark plugs. Replace
them if damaged, badly fouled,
if the sealing washer is in poor
condition, or if the electrode is
worn.
Measure the spark plug
electrode gaps with a wire-type
feeler gauge. Correct the gap, if
necessary, by carefully bending
the side electrode.
The gap should be:
Install the spark plug carefully,
by hand, to avoid cross-
threading.
When installing a new spark plug, tighten 1/2 turn after the spark
plug seats to compress the washer.
When reinstalling the original spark plug, tighten 1/8 1/4 turn
after the spark plug seats to compress the washer.
A loose spark plug can overheat and damage the engine.
Overtightening the spark plug can damage the threads in the
cylinder head.
Attach the spark plug caps to the spark plugs.
If the fuel filter is found with excessive water accumulation or
sediment, take the engine to your authorized Honda servicing
dealer.
Disconnect the spark plug caps, and remove any dirt from
around the spark plug area.
After the spark plug is seated, tighten with a 13/16-inch spark
plug wrench to compress the sealing washer.
0.7 0.8 mm (0.028 0.031 in)
Check the fuel filter for water accumulation or sediment. 1.
2.
1.
2.
3.
4.
5.
6.
7.
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