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Maintenance Chart
First 5 Hours
Change oil
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Every 8 Hours or Daily
Check engine oil level
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Clean area around muffler and controls
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Clean finger guard
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Every 25 Hours or Annually
Clean air filter *
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Clean pre-cleaner *
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Every 50 Hours or Annually
Change engine oil
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Check muffler and spark arrester
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Annually
Replace air filter
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Replace pre-cleaner
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Replace spark plug
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Replace fuel filter
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Clean air cooling system *
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*
In dusty conditions or when airborne debris is present, clean more often.
Carburetor Adjustment
Never make adjustments to the carburetor. The carburetor was set at the factory to
operate efficiently under most conditions. However, if adjustments are required, see any
Briggs & Stratton Authorized Dealer for service.
CAUTION: The manufacturer of the equipment on which this engine is installed specifies
the top speed at which the engine will be operated. Do not exceed this speed.
How To Replace The Spark Plug - Figure 7
Check the gap (A, Figure 7) with a wire gauge (B). If necessary, reset the gap. Install
and tighten the spark plug to the recommended torque. For gap setting or torque, see the
Specifications section.
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.
Inspect Muffler And Spark Arrester - Figure 8
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.
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Remove accumulated debris from muffler area and cylinder area.
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Install and maintain in working order a spark arrester before using equipment on
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forest-covered, grass-covered, brush-covered unimproved land. The state of
California requires this (Section 4442 of the California Public Resources Code).
Other states may have similar laws. Federal laws apply on federal land.
Inspect the muffler (A, Figure 8) for cracks, corrosion, or other damage. Remove the
spark arrester (B), if equipped, and inspect for damage or carbon blockage. If
replacement parts are required, make sure to use only original equipment replacement
parts.
WARNING:
Replacement parts must be the same and installed in the same
position as the original parts or fire could result.
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How To Change The Oil - Figure 2
WARNING
Gasoline and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
If you drain the oil from the top oil fill tube, the fuel tank must be empty or fuel can
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leak out and result in a fire or explosion.
CAUTION: 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 (A) and keep it away
from the spark plug (Figure 9).
2. The engine is equipped with a bottom drain (B, Figure 10). Remove the oil drain plug
(C). Drain the oil into an approved container.
Note: Any of the oil drain plugs (C) shown may be installed in the engine.
3. After the oil has drained, install and tighten the oil drain plug.
4. If you drain the oil from the top oil fill tube (D), keep the spark plug end of the engine
(E) up (Figure 11). Drain the oil into an approved container.
WARNING:
If you drain the oil from the top, 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
Place engine level.
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Clean the oil fill area of any debris.
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See the Specifications section for oil capacity.
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1. Remove the dipstick (F) and wipe with a clean cloth (Figure 2).
2. Pour the oil slowly into the engine oil fill (G). Do not overfill. After adding oil, wait
one minute and then check the oil level.
3. Install and tighten the dipstick.
4. Remove the dipstick and check the oil level. It should be at the FULL mark (H) on the
dipstick.
5. Install and tighten the dipstick.
How To Service The Air Filter - Figure 13
WARNING
Gasoline and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
Never start or run the engine with the air cleaner assembly or the air filter removed.
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CAUTION: Do not use pressurized air or solvents to clean the filter. Pressurized air can
damage the filter and solvents will dissolve the filter.
The air cleaner system uses a pleated filter with an optional pre-cleaner. The pre-cleaner
can be washed and reused.
1. Loosen the fastener (A) that holds the cover (B). See Figure 13.
2. Open the cover and remove the pre-cleaner (C) and the filter (D).
3. To loosen debris, gently tap the filter on a hard surface. If the filter is excessively
dirty, replace with a new filter.
4. Remove the pre-cleaner from the filter.
5. Wash the pre-cleaner in liquid detergent and water. Then allow it to thoroughly air
dry. Do not oil the pre-cleaner.
6. Assemble the dry pre-cleaner to the filter.
7. Install the filter.
8. Close the cover and secure with the fastener.
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