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11Section 6 — Maintenance
good condition and thread the spark plug
in by hand to prevent cross-threading.
5. After the spark plug is seated, tighten
with a spark plug wrench to compress the
washer.
NOTE: When installing a new spark plug,
tighten 1/2 turn after the spark plug
seats to compress the washer. When
reinstalling a used spark plug, tighten
1/8-1/4 turn after the spark plug seats to
compress the washer.
IMPORTANT: The spark plug must be
securely tightened. An improperly
tightened spark plug can become very
hot and may damage the engine.
Fuel Filter Service
The fuel filter cannot be cleaned and must be
replaced once a year or every 100 operating
hours; more often if run with old gasoline.
1. Remove all fuel from tank by running
engine until it stops from lack of fuel.
2. Remove hose clamp from fuel line and
remove fuel line from tank outlet. See
Figure 6-5.
Fuel Filter
Figure 6-5
3. Pull out old fuel filter from tank outlet.
Replace when dirty or damaged.
4. Grasp new fuel filter from shouldered end
and insert it completely to the shoulder
into the tank outlet.
See Figure 6-5 inset.
5. Replace fuel line and c-clamp.
Clean Engine
If the engine has been running, allow it to
cool for at least half an hour before cleaning.
Periodically remove dirt build-up from engine.
Clean finger guard and around muffler. Clean
with a brush or compressed air.
IMPORTANT: Do not spray engine with water
to clean because water could contaminate
fuel. Using a garden hose or pressure washing
equipment can also force water into the air
cleaner or muffler opening. Water in the air
cleaner will soak the paper element, and water
that passes through the element or muffler can
enter the cylinder, causing damage.
WARNING!
Accumulation of debris around muffler could cause
a fire. Inspect and clean before every use.
Storage
CAUTION
Failure to use a fuel stabilizing additive or
completely run the engine until it’s out of fuel
before off-season storage may result in damage
to your engine’s carburetor. Subsequent damage
would not be covered under the manufacturer’s
warranty.
Gasoline that will be stored longer than 30
days needs to be pre-treated upon purchase
with fuel stabilizer to prevent gum and varnish
from forming in the engines fuel and intake
system. Improper fuel storage can result in
hard starting, no starting, stalling and poor
performance. If the gasoline in your engine
deteriorates during storage, you may need
to have the carburetor, and other fuel system
components, serviced or replaced.
1. Remove all fuel from tank by running
engine until it stops from lack of fuel.
WARNING!
Never leave engine unattended while running.
2. Change oil. See Oil Change section on
page 10.
3. Remove spark plug and pour about 1/2
an ounce of engine oil into cylinder.
Replace spark plug and crank slowly to
distribute oil.
4. Clean debris from around engine, under
finger guard, and under, around and
behind muffler. Touch up any damaged
paint, and coat other areas that may rust
with a light film of oil.
5. Store in a clean, dry and well ventilated
area away from any appliance that
operates with a flame or pilot light, such
as a furnace, water heater, or clothes
dryer. Also avoid any area with a spark
producing electric motor, or where power
tools are operated.
6. If possible, also avoid storage areas with
high humidity, because that promotes
rust and corrosion.
7. Keep the engine level in storage. Tilting
can cause fuel or oil leakage.
Removing From Storage
1. Check your engine as described in Pre-
Operation Check on page 7 of Operation
section of this manual.
2. If the fuel was drained during storage
preparation, fill the tank with fresh
gasoline. If you keep a container of
gasoline for refueling, make certain it
contains only fresh fuel. Gasoline oxidizes
and deteriorates over time, causing hard
starting.
3. If the cylinder was coated with oil during
storage preparation, the engine will
smoke briefly at startup. This is normal.
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