Briggs & Stratton XR750 Manual Del Operario página 9

2. Open the cover (B, Figure 11). Remove the retainer (D) and foam element (C).
3. Wash the foam element (C, Figure 11) in liquid detergent and water. Squeeze dry
the foam element in a clean cloth.
4. Saturate the foam element (C, Figure 11) 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 11) and the retainer (D).
6. Install the cover (B, Figure 11) and secure with the fastener(s) (A).
Foam Air Filter
1. Open the fastener(s) (A, Figure 12).
2. Open the cover (B, Figure 12) and remove the foam element (C).
3. Wash the foam element (C, Figure 12) in liquid detergent and water. Squeeze dry
the foam element in a clean cloth.
4. Saturate the foam element (C, Figure 12) 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 12).
6. Install the cover (B, Figure 12) and close the fastener(s) (A).
Paper Air Filter
1. Loosen the fastener(s) (D, Figure 13).
2. Remove the cover (A, Figure 13).
3. Remove the pre-cleaner (C, Figure 13), if equipped, and the filter (B).
4. To loosen debris, gently tap the filter (B, Figure 13) on a hard surface. If the filter is
excessively dirty, replace with a new filter.
5. Wash the pre-cleaner (C, Figure 13), if equipped, in liquid detergent and water. Allow
the pre-cleaner to throughly air dry. Do not oil the pre-cleaner.
6. Install the dry pre-cleaner (C, Figure 13), if equipped, and the filter (B) .
7. Install the cover (A, Figure 13) and secure with the fastener(s) (D). Make sure the
fastener(s) is tight.
Paper Air Filter
1. Loosen the fastener(s) (A, Figure 14).
2. Remove the cover (B, Figure 14).
3. Remove the fastener (E, Figure 14).
4. To prevent debris from falling into the carburetor, carefully remove the pre-cleaner
(D, Figure 14) and the filter (C) from the air filter base (F).
5. 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.
6. Remove the pre-cleaner (D, Figure 14) from the filter (C).
7. 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.
8. Assemble the dry pre-cleaner (D, Figure 14) to the filter (C).
9. Install the filter (C, Figure 14) 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 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.
• Keep fuel away from sparks, open flames, pilot lights, heat, and other ignition sources.
• Check fuel lines, tank, cap, and fittings frequently for cracks or leaks. Replace if
necessary.
• Before cleaning or replacing the fuel filter, drain the fuel tank or close the fuel shut-off
valve.
• If fuel spills, wait until it evaporates before starting engine.
• Replacement parts must be the same and installed in the same position as the original
parts.
Fuel Filter, if equipped
1. Before cleaning or replacing the fuel filter (A, Figure 15), drain the fuel tank or close
the fuel shut-off valve. Otherwise, fuel can leak out and cause a fire or explosion.
2. Use pliers to squeeze tabs (B, Figure 15) on the clamps (C), then slide the clamps
away from the fuel filter (A). Twist and pull the fuel lines (D) off of the fuel filter.
3. Check the fuel lines (D, Figure 15) for cracks or leaks. Replace if necessary.
4. Replace the fuel filter (A, Figure 15) with an original equipment replacement filter.
5. Secure the fuel lines (D, Figure 15) with clamps (C) as shown.
Fuel Strainer, if equipped
1. Remove the fuel cap (A, Figure 16).
2. Remove the fuel strainer (B, Figure 16).
3. If the fuel strainer is dirty, clean or replace it. If you replace the fuel strainer, make
sure to use an original equipment replacement fuel strainer.
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.
NOTICE Store the engine level (normal operating position). If the engine is tipped for
maintenance, the fuel tank must be empty and the spark plug side must be up. If the
fuel tank is not empty and 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.
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.
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