Briggs & Stratton Vanguard 490000 Manual Del Operario página 10

• 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.
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
See Figure: 19
Store the engine level (normal operating position). Fill fuel tank (A, Figure 19) with fuel.
To allow for expansion of fuel, do not overfill above the fuel tank neck (B).
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.
10
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.
Troubleshooting
For assistance, contact your local dealer or go to VanguardEngines.com or call 1-800-
999-9333 (in USA).
Specifications
Model: 490000, 49E700, 49E800
Displacement
Bore
Stroke
Oil Capacity
Spark Plug Gap
Spark Plug Torque
Armature Air Gap - Carburetor Models
Intake Valve Clearance
Exhaust Valve Clearance
Engine power will decrease 3.5% for each 1,000 feet (300 meters) above sea level and
1% for each 10° F (5.6° C) above 77° F (25° C). The engine will operate satisfactorily at
an angle up to 15°. Refer to the equipment operator's manual for safe allowable operating
limits on slopes.
Service Parts - Model: 490000, 49E700, 49E800
Service Part
Cyclonic Air Filter (see Figure 1)
Cyclonic Safety Filter (see Figure 1)
Low Profile Air Filter (see Figure 1)
Air Filter Pre-cleaner (see Figure 1)
Oil - SAE 30
Oil Filter
Advanced Formula Fuel Treatment & Stabilizer
Fuel Filter
Resistor Spark Plug
Long Life Platinum Spark Plug
Spark Plug Wrench
Spark Tester
We recommend that you see any Briggs & Stratton Authorized Dealer for all maintenance
and service of the engine and engine parts.
Power Ratings: The gross power rating for individual gasoline engine models is labeled
in accordance with SAE (Society of Automotive Engineers) code J1940 Small Engine
Power & Torque Rating Procedure, and is rated in accordance with SAE J1995. Torque
values are derived at 2600 RPM for those engines with "rpm" called out on the label and
3060 RPM for all others; horsepower values are derived at 3600 RPM. The gross power
curves can be viewed at www.BRIGGSandSTRATTON.COM. Net power values are taken
with exhaust and air cleaner installed whereas gross power values are collected without
these attachments. Actual gross engine power will be higher than net engine power and
is affected by, among other things, ambient operating conditions and engine-to-engine
variability. Given the wide array of products on which engines are placed, the gasoline
engine may not develop the rated gross power when used in a given piece of power
equipment. This difference is due to a variety of factors including, but not limited to, the
variety of engine components (air cleaner, exhaust, charging, cooling, carburetor, fuel
pump, etc.), application limitations, ambient operating conditions (temperature, humidity,
altitude), and engine-to-engine variability. Due to manufacturing and capacity limitations,
Briggs & Stratton may substitute an engine of higher rated power for this engine.
49.42 ci (810 cc)
3.300 in (83,81 mm)
2.890 in (73,41 mm)
66 - 68 oz (1,9 - 2,0 L)
.030 in (,76 mm)
180 lb-in (20 Nm)
.008 - .012 in (,20 - ,30 mm)
.004 - .006 in (,10 - ,15 mm)
.004 - .006 in (,10 - ,15 mm)
Part Number
841497
821136
796031
797704
100028
492932
5041, 5058
691035
491055
5066
19374
19368
VanguardEngines.com