Service Air Filter; Troubleshooting; Specifications - Briggs & Stratton 83100 Operator's Manual

4. To refill, slowly pour gear lube (see Specifications section) into the oil fill hole (D,
Figure 9). Continue to pour until the oil runs out of the oil level hole (E).
5. Reinstall and tighten the oil level plug (B, Figure 9).
6. Reinstall and tighten the oil fill plug (A, Figure 9).
NOTE: The oil fill plug (A, Figure 9) has a vent hole (F) and must be installed on the top
of the gear case cover as shown.

Service Air Filter

See Figure: 10, 11
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. Loosen the fastener(s) (A, Figure 10).
2. Remove the cover (B, Figure 10).
3. Remove the fastener (D, Figure 10) and washer (E).
4. To prevent debris from falling into the carburetor, carefully remove the foam element
(C, Figure 10) from the air filter base (G).
5. Remove the support cup (F, Figure 10) from the foam element (C).
6. Wash the foam element (C, Figure 10) in liquid detergent and water. Squeeze dry
the foam element in a clean cloth.
7. Saturate the foam element (C, Figure 10) with clean engine oil. To remove the excess
engine oil, squeeze the foam element in a clean cloth.
8. Insert the support cup (F, Figure 10) into the foam element (C).
9. Install the foam element (C, Figure 10) to air filter base (G) and onto stud (H). Make
sure foam element is properly assembled to air filter base and secure with washer
(E) and fastener (D).
10. Install the cover (B, Figure 10) and secure with fastener(s) (A). Make sure the
fastener(s) is tight.
Paper Air Filter
1. Loosen the fastener(s) (A, Figure 11).
2. Remove the cover (B, Figure 11).
3. Remove the fastener (E, Figure 11).
4. To prevent debris from falling into the carburetor, carefully remove the pre-cleaner
(D, Figure 11) and the filter (C) from the air filter base (F).
5. To loosen debris, gently tap the filter (C, Figure 11) on a hard surface. If the filter is
excessively dirty, replace with a new filter.
6. Remove the pre-cleaner (D, Figure 11) from the filter (C).
7. Wash the pre-cleaner (D, Figure 11) in liquid detergent and water. Allow the
pre-cleaner to throughly air dry. Do not oil the pre-cleaner.
8. Assemble the dry pre-cleaner (D, Figure 11) to the filter (C).
9. Install the filter (C, Figure 11) and the pre-cleaner (D) to air filter base (F) and onto
stud (G). Make sure the filter is properly assembled to air filter base and secure with
fastener (E).
10. Install the cover (B, Figure 11) and secure with the fastener(s) (A). Make sure the
fastener(s) is tight.
8
Service Cooling 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.
NOTICE Do not use water to clean the engine. Water could contaminate the fuel
system. Use a brush or dry cloth to clean the engine.
This is an air cooled engine. Dirt or debris can restrict air flow and cause the engine to
overheat, resulting in poor performance and reduced engine life.
1. Use a brush or dry cloth to remove debris from the air intake grille.
2. Keep linkage, springs and controls clean.
3. Keep the area around and behind the muffler, if equipped, free of any combustible
debris.
4. Make sure the oil cooler fins, if equipped, are free of dirt and debris.
After a period of time, debris can accumulate in the cylinder cooling fins and cause the
engine to overheat. This debris cannot be removed without partial disassembly of the
engine. Have a Briggs & Stratton Authorized Service Dealer inspect and clean the air
cooling system as recommended in the Maintenance Schedule.
Storage
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When Storing Fuel Or Equipment With Fuel In Tank
• Store away from furnaces, stoves, water heaters or other appliances that have pilot
lights or other ignition sources because they can ignite fuel vapors.
Fuel System
Fuel can become stale when stored over 30 days. Stale fuel causes acid and gum deposits
to form in the fuel system or on essential carburetor parts. To keep fuel fresh, use Briggs
& Stratton Advanced Formula Fuel Treatment & Stabilizer, available wherever Briggs
& Stratton genuine service parts are sold.
There is no need to drain gasoline from the engine if a fuel stabilizer is added according
to instructions. Run the engine for two (2) minutes to circulate the stabilizer throughout the
fuel system before storage.
If gasoline in the engine has not been treated with a fuel stabilizer, it must be drained into
an approved container. Run the engine until it stops from lack of fuel. The use of a fuel
stabilizer in the storage container is recommended to maintain freshness.
Engine Oil
While the engine is still warm, change the engine oil. See the Change Engine Oil section.
NOTICE Store the engine level (normal operating position). If the engine is tipped in
any other direction, it may be difficult to start due to oil or gasoline contaminating the
air filter and/or the spark plug.

Troubleshooting

Need assistance? Go to BRIGGSandSTRATTON.com or call 1-800-233-3723 (in USA).

Specifications

Model: 83100
Displacement
Bore
7.74 ci (127 cc)
2.441 in (62 mm)
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