Sediment Cup; Spark Plug - Honda GX120 Owner's Manual

Low Profile Types
1. Unsnap the air cleaner cover
clips, remove the air cleaner
cover, and remove the air
filter element.
2. Wash the element in a
solution of household
detergent and warm water,
then rinse thoroughly, or
wash in nonflammable or
high flashpoint solvent. Allow
the element to dry thoroughly.
3. Soak the air filter element in
clean engine oil and squeeze
out the excess oil. The engine
will smoke during initial
startup if too much oil is left
in the element.
4. Reinstall the air filter element
and the cover.
ELEMENT

SEDIMENT CUP

Cleaning
Gasoline is highly flammable and explosive, and you
can be burned or seriously injured when handling
fuel.
Stop engine and keep heat, sparks, and flame away.
Handle fuel only outdoors.
Wipe up spills immediately.
1. Move the fuel valve to the OFF position, then remove the fuel
sediment cup and O-ring.
2. Wash the sediment cup and O-ring in nonflammable solvent,
and dry them thoroughly.
FUEL VALVE LEVER
OFF
3. Place the O-ring in the fuel valve, and install the sediment cup.
Tighten the sediment cup securely.
12
CLIP
AIR CLEANER COVER
CLIP
AIR FILTER ELEMENT
O-RING
SEDIMENT CUP
4. Move the fuel valve to the ON position, and check for leaks.
Replace the O-ring if there is any leakage.

SPARK PLUG

Recommended Spark Plugs:
The recommended spark plug is 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.
1. Disconnect the spark plug cap,
and remove any dirt from
around the spark plug area.
2. Remove the spark plug with a
13/16-inch spark plug wrench.
3. Inspect the spark plug.
Replace it if damaged, badly
fouled, if the sealing washer
is in poor condition, or if the
electrode is worn.
4. 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:
0.70 0.80 mm (0.028 0.031 in)
5. Install the spark plug carefully,
by hand, to avoid cross-
threading.
6. After the spark plug is seated, tighten with a 13/16-inch spark
plug wrench to compress the sealing washer.
7. When installing a new spark plug, tighten 1/2 turn after the spark
plug seats to compress the washer.
8. 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.
9. Attach the spark plug cap to the spark plug.
ENGLISH
BPR6ES (NGK)
W20EPR-U (DENSO)
SPARK PLUG WRENCH
SIDE ELECTRODE
0.70 0.80 mm
(0.028 0.031 in)
SEALING
WASHER