HONDA WMP20X - Manual (Page 9)

9
Air Filter Inspection
1. Unscrew the outer wing nut and remove the air cleaner cover.
2. Remove the inner wing nut and both air filter elements.
3. Separate the air filter elements and carefully check them for holes
or tears. Replace the filter elements if they are damaged.
4. If the air filter elements are dirty, clean them as described below.
5. Wipe dirt from the inside of the air cleaner housing and cover. Be
careful to prevent dirt from entering the air duct that leads to the
carburetor.
6. Install the foam element over the paper element, and install the
assembled air filter. Secure the air filter with the inner wing nut.
Make sure the rubber washer is in place under the filter elements.
7. Install the air cleaner cover, and secure with the outer wing nut.
NOTICE
Operating the engine without an air filter, or with a damaged air
filter, will allow dirt to enter the engine, causing rapid engine wear.
This type of damage is not covered by the DISTRIBUTOR'S
LIMITED WARRANTY.
Air Filter Cleaning
A dirty air filter will restrict air flow to the carburetor, reducing engine
performance. If you operate the pump in very dusty areas, clean the
air filter more often than specified in the MAINTENANCE SCHEDULE
(page 7).
1. To clean the paper filter element, tap the element lightly several
times on a hard surface to remove excess dirt, or blow compressed
air [not exceeding 30 psi (207 kPa)] through the filter element from
the inside out.
Never try to brush the dirt off; brushing will force dirt into the paper
fibers. Replace the paper element if it is excessively dirty or
damaged.
2. To clean the foam filter
element, wash the
element in a solution of
household detergent and
warm water, then rinse
thoroughly, or wash in
nonflammable solvent.
3. Allow the foam filter
element to dry
thoroughly.
4. Soak the foam filter element in clean engine oil and squeeze out
the excess oil.
NOTICE
Excess oil will restrict air flow through the foam filter element and
may transfer to the paper filter element, soaking and clogging it.
5. Reassemble the air filter as shown.
Spark Plug Service
Recommended Spark Plug: NGK - BPR6ES
NOTICE
Incorrect spark plugs can cause engine damage.
For good performance, the spark plug must be properly gapped and
free of deposits.
Allow the engine to cool before servicing the spark plug.
1. Disconnect the spark
plug cap and remove
any dirt from around
the spark plug area.
2. Use a 13/16 in
(21 mm) 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)
OUTER
WING NUT
AIR CLEANER
COVER
INNER
WING NUT
PAPER FILTER
ELEMENT
FOAM FILTER
ELEMENT
RUBBER
WASHER
SOLVENT
ENGINE OIL
SQUEEZE
THOROUGHLY
SPARK PLUG WRENCH
SPARK PLUG CAP
0.028 ~ 0.031 in
(0.7 ~ 0.8 mm)
SEALING
WASHER
POM50594-G_WMP20X.fm Page 9 Tuesday, March 25, 2008 2:34 PM