Spark Arrester (Optional Part) - Honda WMP20X Owner's Manual

1. Disconnect the spark
plug cap and remove
any dirt from around
the spark plug area.
2. Use a spark plug
wrench to remove the
spark plug.
3. Visually inspect the
spark plug. Discard it if
the insulator is
cracked, chipped, or
fouled.
4. Measure the plug gap
with a suitable gauge.
Correct as necessary
by carefully bending
the side electrode.
Plug gap:
0.028 ~ 0.031 in
(0.7 ~ 0.8 mm)
5. Check that the spark
plug washer is in good
condition, and thread
the spark plug in by
hand to prevent
cross-threading.
6. After the spark plug is
seated, tighten with a
spark plug wrench to
compress the washer.
If installing a new spark plug, tighten 1/2 turn after the spark plug
seats to compress the washer.
If reinstalling a used spark plug, tighten 1/8 - 1/4 turn after the
spark plug seats to compress the washer.
NOTICE
A loose spark plug can overheat and damage the engine.
Overtightening the spark plug can damage the threads in the
cylinder head.
7. Reconnect the spark plug cap.

Spark Arrester (optional part)

The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
Your pump engine is not factory-equipped with a spark arrester. In
some areas, it is illegal to operate an engine without a spark arrester.
Check local laws and regulations. An optional USDA approved spark
arrester is available from an authorized Honda servicing dealer. See
page 20 for part numbers.
If the engine has been running, the muffler will be very hot. Allow the
muffler to cool before servicing the spark arrester.
12
SPARK PLUG WRENCH
SPARK PLUG CAP
0.028 ~ 0.031 in
(0.7 ~ 0.8 mm)
SEALING
WASHER
1. Allow the engine to cool, remove the two 8 mm nuts, and remove
the muffler from the cylinder head.
2. Remove the four 5 mm screws from the muffler protector and
remove the muffler protector.
3. Remove the 4 mm screw from the spark arrester and remove the
spark arrester from the muffler.
MUFFLER
PROTECTOR
8 mm NUT (2)
MUFFLER
4. Use a stiff brush to remove
carbon deposits from the spark
arrester screen. Be careful not
to damage the spark arrester
screen.
5. Inspect the spark arrester for
breaks and holes. Replace it if
necessary.
6. Install the spark arrester and the
muffler in the reverse order of
disassembly.
Sediment Cup Cleaning
1. Turn the fuel valve to the
OFF position.
2. Remove the sediment
cup and O-ring and wash
them in nonflammable
solvent. Dry them
thoroughly.
3. Install the O-ring and
sediment cup and tighten
securely.
4. Turn the fuel valve to the
ON position and check
for leaks.
5 mm SCREW (4)
4 mm SCREW
SPARK
ARRESTER
SPARK ARRESTER SCREEN
ON OFF
FUEL
VALVE
O-RING
SEDIMENT CUP