Briggs & Stratton Vanguard 490000 Manual Del Operario página 9

Service Spark Plug
See Figure: 9
Check the gap (A, Figure 9) 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.
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.
Exhaust system parts are installed by the equipment manufacturer. For specific maintenance
and replacement parts information, contact the equipment manufacturer.
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: 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.
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