Cleaning, Spark plug, Recommended spark plugs – HONDA GX100 User Manual
Page 9

ENGLISH
Cleaning
SPARK PLUG
Recommended Spark Plugs:
SPARK PLUG WRENCH
SEALING
WASHER
AIR CLEANER CASE
SCREWS
AIR CLEANER COVER
0.60
0.70 mm
(0.024
0.028 in)
SPARK PLUG GAP
SIDE ELECTRODE
PAPER AIR FILTER ELEMENT
FOAM AIR FILTER ELEMENT
9
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.
Remove two screws from the air cleaner cover, and remove the
cover.
Remove the foam air filter element from the cover.
Remove the paper air filter element from the air cleaner case.
Clean the air filter elements if they are to be reused.
Wipe dirt from the inside of the air cleaner case and cover using
a moist rag. Be careful to prevent dirt from entering the air duct
that leads to the carburetor.
Place the foam air filter element to the air cleaner cover, then
reinstall the paper air filter element and cover to the air cleaner
case.
Install the air cleaner cover, and tighten the two screws securely.
Inspect both air filter elements, and replace them if they are
damaged. Always replace the paper air filter element at the
scheduled interval (see page
CR5HSB (NGK)
U16FSR-UB (DENSO)
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 5/8-inch spark plug wrench.
After the spark plug is seated, tighten with a 5/8-inch spark plug
wrench to compress the sealing washer.
0.60
0.70 mm (0.024
0.028 in)
Paper air filter element: Tap the paper air filter element several
times on a hard surface to remove dirt, or blow compressed air
[not exceeding 207 kPa (2.1 kgf/cm , 30 psi)] through the filter
element from the air cleaner case side. Never try to brush off
dirt; brushing will force dirt into the fibers. Replace the paper air
filter element if it is excessively dirty.
Foam air filter element: Clean in warm soapy water, rinse, and
allow to dry thoroughly. Or clean in nonflammable solvent and
allow to dry. Do not put oil on the foam air filter element.
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06/11/28 09:52:23 32Z4E600_009