−
−
−
−
−
ENGLISH
SPARK PLUG
Recommended Spark Plugs:
SPARK ARRESTER (applicable types)
Spark Arrester Cleaning & Inspection
Spark Arrester Removal
SPARK PLUG
WRENCH
SIDE ELECTRODE
0.70
0.80 mm
(0.028
0.031 in)
SEALING
WASHER
SPARK ARRESTER SCREEN
PACKING
MUFFLER
6 mm NUTS
MUFFLER PROTECTOR
PACKING
IDENTIFICATION
PLATE
GASKET
GASKET
SPARK ARRESTER
SPARK PLUG
CAP
10
The recommended spark plug has the correct heat range for
normal engine operating temperatures.
An incorrect spark plug can cause engine damage.
For good performance, the spark plug must be properly gapped
and free of deposits.
Disconnect the spark plug cap,
and remove any dirt from
around the spark plug area.
Remove the spark plug with a
13/16-inch spark plug wrench.
Inspect the spark plug. Replace
it if damaged or badly fouled, if
the sealing washer is in poor
condition, or if the electrode is
worn.
Measure the spark plug
electrode gap 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 cap to the spark plug.
After the spark plug is seated, tighten with a 13/16-inch spark
plug wrench to compress the sealing washer.
Install the gasket, spark arrester, muffler, identification plate,
packings and muffler protector in the reverse order of
disassembly.
Use a brush to remove carbon
deposits from the spark arrester
screen. Be careful not to damage
the screen. Replace the spark
arrester if it has breaks or holes.
Check for carbon deposits around
the exhaust port and spark
arrester, and clean if necessary.
Remove the spark arrester from the muffler (take care not to
damage the wire mesh).
Loosen the two 6 mm nuts and remove the muffler protector,
identification plate, muffler and gasket.
If the engine has been running, the muffler will be hot. Allow it to
cool before servicing the spark arrester.
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
The spark arrester may be standard or an optional part, depending
on the engine type. In some areas, it is illegal to operate an engine
without a spark arrester. Check local laws and regulations. A spark
arrester is available from authorized Honda servicing dealers.
In Europe and other countries where the machinery directive
2006/42/EC is enforced, this cleaning should be done by your
servicing dealer.
0.70
0.80 mm (0.028
0.031 in)
1.
2.
3.
4.
5.
6.
7.
8.
9.
1.
2.
1.
2.
3.
BPR5ES (NGK)
W16EPR-U (DENSO)
11/12/13 09:53:11 32Z4PA00_010
