Vanguard 490000 Manuel D'utilisation page 9

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: 10, 11, 12, 13, 14
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
1. With engine off but still warm, disconnect the spark plug wire(s) (D, Figure 10) and
keep it away from the spark plug(s) (E).
2. Remove the dipstick (A, Figure 11).
Oil Drain Plug, if equipped
1. Remove the oil drain plug (F, Figure 11). Drain the oil into an approved container.
Note: Any of the oil drain plugs (F, Figure 11) may be installed in the engine.
2. After the oil has drained, install and tighten the oil drain plug (F, Figure 11).
Quick Oil Drain, if equipped
1. Disconnect the quick oil drain hose (H, Figure 12) from the side of the engine.
2. Turn and remove the oil drain cap (I, Figure 12). Carefully lower the quick oil drain
(H) into an approved container (J).
3. After the oil has drained, install the quick oil drain cap (I, Figure 12). Attach the
quick oil drain hose (H) to the side of the engine.
Change Oil Filter, if equipped
Some models are equipped with an oil filter. For replacement intervals, see the
Maintenance Schedule.
1. Drain the oil from the engine. See Remove Oil section.
2. Remove the oil filter (K, Figure 13) and dispose of properly.
3. Before you install the new oil filter, lightly lubricate the oil filter gasket with fresh,
clean oil.
4. Install the oil filter by hand until the gasket contacts the oil filter adapter, then
tighten the oil filter 1/2 to 3/4 turns.
5. Add oil. See Add Oil section.
6. Start and run the engine. As the engine warms up, check for oil leaks.
7. Stop the engine and check the oil level. Correct oil level is at the top of the full
indicator (B, Figure 14) on the dipstick.
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 14) and wipe with a clean cloth.
2. Slowly pour oil into the engine oil fill (C, Figure 14). Do not overfill. After adding
oil, wait one minute and then check the oil level.
Note: Do not add oil at the quick oil drain (H, Figure 12), if equipped.
3. Install and tighten the dipstick (A, Figure 14).
4. Remove the dipstick and check the oil level. Correct oil level is at the top of the full
indicator (B, Figure 14) on the dipstick.
5. Reinstall and tighten the dipstick (A, Figure 14).
6. Connect the spark plug wire(s) (D, Figure 10) to the spark plug(s) (E).
Service Fuel System
See Figure: 15
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 replacing the fuel filter (A, Figure 15), if equipped, 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.
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.
Models With Cyclonic Air Filter System
See Figure: 16, 17
1. Use a brush or dry cloth to remove debris from the air intake area (A, Figure 16).
2. Keep linkage, springs and controls (B, Figure 16) clean.
3. Keep the area around and behind the muffler free of any combustible debris.
4. Make sure the oil cooler fins (C, Figure 16) are free of dirt and debris.
5. Loosen the fasteners (D, Figure 17) and remove the air intake grille (E). To access
all the fasteners, it may be necessary to remove fasteners (H) and air filter strap
(J). Pivot the air filter (K) to allow access to fastener.
6. Loosen the fasteners (F, Figure 17) and open the debris access panels (G).
Remove any grass and debris that has accumulated on the cylinders.
7. Close the debris access panels (G, Figure 17) and secure with the fasteners (F).
8. Install air filter strap (J, Figure 17) and secure with fasteners (H).
9. Install the air intake grille (E, Figure 16) and secure with the fasteners (D).
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 Dealer inspect and clean the air cooling
system as recommended in the Maintenance Schedule.
Models With Low Profile Air Filter System
See Figure: 18
1. Use a brush or dry cloth to remove debris from the air intake area (A, Figure 18).
2. Keep linkage, springs and controls (B, Figure 18) clean.
3. Keep the area around and behind the muffler free of any combustible debris.
4. Make sure the oil cooler fins (C, Figure 18) are free of dirt and debris.
5. Loosen the fasteners (D, Figure 18) and remove the air intake grille (E).
6. Remove any grass and debris that has accumulated on the cylinders.
7. Install the air intake grille (E, Figure 18) and secure with the fasteners (D).
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 Dealer inspect and clean the air cooling
system as recommended in the Maintenance Schedule.
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