Operators Manual

Not for
Reproduction
Note: In some areas, local law requires using a resistor spark plug to suppress ignition
signals. If this engine was originally equipped with a resistor spark plug, use the same type
for replacement.
Service Exhaust System
WARNING
Running engines produce heat. Engine parts, especially muffler, become extremely
hot.
Severe thermal burns can occur on contact.
Combustible debris, such as leaves, grass, brush, etc. can catch fire.
• Allow muffler, engine cylinder and fins to cool before touching.
• Remove accumulated debris from muffler area and cylinder area.
• It is a violation of California Public Resource Code, Section 4442, to use or operate
the engine on any forest-covered, brush-covered, or grass-covered land unless the
exhaust system is equipped with a spark arrester, as defined in Section 4442,
maintained in effective working order. Other states or federal jurisdictions may have
similar laws. Contact the original equipment manufacturer, retailer, or dealer to obtain
a spark arrester designed for the exhaust system installed on this engine.
Remove accumulated debris from muffler and cylinder area. Inspect the muffler for cracks,
corrosion, or other damage. Remove the deflector or the spark arrester, if equipped, and
inspect for damage or carbon blockage. If damage is found, install replacement parts before
operating.
WARNING
Replacement parts must be of the same design and installed in the same position as
the original parts. Other parts may not perform as well, may damage the unit, and may
result in injury.
Change Engine Oil
See Figure: 9, 10, 11, 12
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
Running engines produce heat. Engine parts, especially muffler, become extremely
hot.
Severe thermal burns can occur on contact.
• When you drain the oil from the top oil fill tube, the fuel tank must be empty or fuel
can leak out and result in a fire or explosion.
• Allow muffler, engine cylinder and fins to cool before touching.
Used oil is a hazardous waste product and must be disposed of properly. Do not discard
with household waste. Check with your local authorities, service center, or dealer for safe
disposal/recycling facilities.
Remove Oil
You can drain the oil from the bottom drain hole or from the top oil fill tube.
1. With engine off but still warm, disconnect the spark plug wire (D, Figure 9) and keep
it away from the spark plug (E).
2. Remove the oil drain plug (F, Figure 10). Drain the oil into an approved container.
Note: Any of the oil drain plugs (G, Figure 10) may be installed in the engine.
3. After the oil has drained, install and tighten the oil drain plug (F, Figure 10).
4. When you drain the oil from the top oil fill tube (C, Figure 11), keep the spark plug
(E) end of the engine up. Drain the oil into an approved container.
WARNING
When you drain the oil from the top oil fill tube, the fuel tank must be empty or fuel can
leak out and result in a fire or explosion. To empty the fuel tank, run the engine until it
stops from lack of fuel.
Add Oil
• Make sure the engine is level.
• Clean the oil fill area of any debris.
• See the Specifications section for oil capacity.
1. Remove the dipstick (A, Figure 12) and wipe with a clean cloth.
2. Slowly pour oil into the engine oil fill (C, Figure 12). Do not overfill. After adding oil,
wait one minute and then check the oil level.
3. Install and tighten the dipstick (A, Figure 12).
4. Remove the dipstick and check the oil level. Correct oil level is at the top of the full
indicator (B, Figure 12) on the dipstick.
5. Reinstall and tighten the dipstick (A, Figure 12).
6. Connect the spark plug wire (D, Figure 9) to the spark plug (E).
Service Air Filter
See Figure: 13, 14
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
• Never start and run the engine with the air cleaner assembly (if equipped) or the air
filter (if equipped) removed.
NOTICE Do not use pressurized air or solvents to clean the filter. Pressurized air can
damage the filter and solvents will dissolve the filter.
See the Maintenance Schedule for service requirements.
Various models use either a foam or a paper filter. Some models may also have an optional
pre-cleaner that can be washed and reused. Compare the illustrations in this manual with
the type installed on your engine and service as follows.
Foam Air Filter
1. Move the slide lock (A, Figure 13) to the unlock position and open the cover (B).
2. Remove the foam element (C, Figure 13) from the air filter base.
3. Wash the foam element (C, Figure 13) in liquid detergent and water. Squeeze dry
the foam element in a clean cloth.
4. Saturate the foam element (C, Figure 13) with clean engine oil. To remove the excess
engine oil, squeeze the foam element in a clean cloth.
5. Install the foam element (C, Figure 13) onto the air filter base.
6. Close the cover (B, Figure 13) and move the slide lock (A) to the locked position.
Paper Air Filter
1. Loosen the fastener(s) (A, Figure 14).
2. Remove the cover (B, Figure 14).
3. Remove the pre-cleaner (D, Figure 14), if equipped, and the filter (C) from the air
filter base.
4. To loosen debris, gently tap the filter (C, Figure 14) on a hard surface. If the filter is
excessively dirty, replace with a new filter.
5. Wash the pre-cleaner (D, Figure 14) in liquid detergent and water. Allow the pre-
cleaner to throughly air dry. Do not oil the pre-cleaner.
6. Assemble the dry pre-cleaner (D, Figure 14) to the filter (C) with the lip (E) of the
pre-cleaner on the bottom of the filter pleats.
7. Install the filter (C, Figure 14) and the pre-cleaner (D) onto the air filter base.
8. Mount the cover tabs (F, Figure 14) into slots (G).
9. Close the cover (B, Figure 14) and secure with the fastener(s) (A). Make sure the
fastener(s) is tight.
Service Fuel System
See Figure: 15, 16
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
9