Change Engine Oil; Service Air Filter - Vanguard 490000 Manual Del Operador

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 Air Filter

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.
10
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.
Paper Air Filter
See Figure: 15
1. Open the fastener(s) (A, Figure 15) and remove the cover (B).
2. Remove the air filter (C, Figure 15).
3. To loosen debris, gently tap the air filter on a hard surface. If the air filter is
excessively dirty, replace with a new air filter.
4. To remove the safety filter (D, Figure 15), if equipped, carefully pull it away from
the air cleaner body (E). Make sure that dirt or debris does not enter the engine.
5. Install the new safety filter (D, Figure 15) in the air cleaner body (E).
6. Install the air filter (C, Figure 15) over the safety filter (D).
7. Install the cover (B, Figure 15) and close the fastener(s) (A).
Paper Air Filter
See Figure: 16
1. Loosen the fastener(s) (A, Figure 16).
2. Remove the air filter cover (B, Figure 16).
3. To remove the filter (C, Figure 16), lift the end of the filter.
4. To loosen debris, gently tap the filter on a hard surface. If the filter is excessively
dirty, replace with a new filter.
5. Remove the pre-cleaner (D, Figure 16), if equipped, from the filter (C).
6. Wash the pre-cleaner (D, Figure 16), if equipped, in liquid detergent and water.
Allow the pre-cleaner to thoroughly air dry. Do not oil the pre-cleaner.
7. Assemble the dry pre-cleaner (D, Figure 16), if equipped, to the filter (C).
8. Install the filter (C, Figure 16) and pre-cleaner (D), if equipped, into the filter base
(E) and push down until the filter snaps in place.
9. Install the air filter cover (B, Figure 16) and secure with fastener(s) (A). Make sure
the fastener(s) is tight.
Service Fuel System
See Figure: 17
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 17), 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 17) 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 17) for cracks or leaks. Replace if necessary.
4. Replace the fuel filter (A, Figure 17) with an original equipment replacement filter.
5. Secure the fuel lines (D, Figure 17) 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.
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