Briggs & Stratton 400000 Manual Del Operador página 11

Servicing the Fuel System
WARNING
Fuel and its vapors are flammable and explosive. Fire or explosion could result in
burns or death.
• Keep fuel away from sparks, open flames, pilot lights, heat, and other ignition
sources.
• Frequently examine the fuel lines, fuel tank, fuel cap, and connections for cracks
or leaks. Replace damaged parts.
• Before you clean or replace the fuel filter, drain the fuel tank or close the fuel
shut-off valve.
• If fuel spills, wait until it dries before you start the engine.
• Replacement parts must be of the same design and installed in the same
position as the original parts. Other parts could result in damage or an injury.
Fuel Filter, if installed
1. Before you clean or replace the fuel filter (A, Figure 22), drain the fuel tank or close
the fuel shut-off valve. If the fuel tank is not drained, fuel leakage could occur and
cause a fire or explosion.
2. Use pliers to squeeze tabs (B, Figure 22) on the clamps (C), then move the clamps
away from the fuel filter (A). Twist and pull the fuel lines (D) off of the fuel filter.
3. Examine the fuel lines (D, Figure 22) for cracks or leaks. Replace if necessary.
4. Replace the fuel filter (A, Figure 22) with an original equipment replacement filter.
5. Attach the fuel lines (D, Figure 22) with clamps (C).
Servicing the Cooling System
WARNING
During operation, the engine and muffler become hot. If you touch a hot engine,
thermal burns can occur.
Combustible debris, such as leaves, grass, and brush can catch fire.
• Before you touch the engine or muffler, stop the engine and wait two (2)
minutes. Make sure that the engine and muffler are safe to touch.
• Remove debris from the muffler and engine.
NOTICE
Do not use water to clean the engine. Water could cause contamination of the fuel
system. Use a brush or dry cloth to clean the engine.
This is an air cooled engine. Dirt or debris can stop the air flow and cause the engine to
become too hot and result in unsatisfactory performance and decrease engine life.
1. Use a brush or dry cloth to remove debris from the air intake area (A, Figure 23).
2. Keep linkage, springs, and controls (B, Figures 23, 24) clean.
3. Keep the area around and behind the muffler free of combustible debris.
4. Make sure the oil cooler fins (C, Figures 23, 24), if equipped, are free of dirt and
debris.
5. Loosen the fastener(s) (D, Figure 23) and remove the air filter cover (E).
6. Loosen the fastener(s) (F, Figure 23) and remove the debris access panels (G,
Figure 24). Remove grass and debris that has collected on the cylinders.
7. Install the debris access panels (G, Figure 24) and attach with fastener(s) (F, Figure
23).
8. Install the air filter cover (E, Figure 23) and attach with fastener(s) (D).
After a period of time, debris can collect in the cylinder cooling fins and cause the engine
to overheat. This debris cannot be removed without partial disassembly of the engine.
As recommended in the Maintenance Schedule, have a Briggs & Stratton Authorized
Service Dealer inspect and clean the air cooling system.
Storage
Fuel System
Refer to Figure: 25.
WARNING
Fuel and its vapors are flammable and explosive. Fire or explosion could result in
burns or death.
Fuel Storage
• Because pilot lights or other ignition sources can cause explosions, keep fuel or
equipment away from furnaces, stoves, water heaters or other appliances that
have pilot lights.
Keep the engine level at the correct operating position. Fill the fuel tank (A, Figure 25)
with fuel. For fuel expansion, do not fill above the fuel tank neck (B).
Fuel can become stale when kept in a storage container for more than 30 days. The
use of an alcohol-free fuel stabilizer and ethanol treatment in the fuel storage container
is recommended. This keeps fuel fresh and decreases fuel-related problems or
contamination in the fuel system.
When you fill the container with fuel, add an alcohol-free fuel stabilizer as specified by
the manufacturer's instructions. If gasoline in the engine has not been treated with a fuel
stabilizer, it must be drained into an approved container. Operate the engine until it is
out of fuel.
NOTE: DO NOT run the Electronic Fuel Injection engine out of fuel. Fuel pump damage
can occur. Make sure to add the correct amount of fuel stabilizer to the fuel tank, and
run the engine for 30 minutes.
Engine Oil
While the engine is still warm, change the engine oil. Refer to Change the Engine Oil
section.
Troubleshooting
Assistance
For assistance, contact your local dealer or go to BRIGGSandSTRATTON.COM or call
1-800-444-7774 (in USA).
Specifications
Specifications and Service Parts
MODEL: 400000
Displacement
Bore
Stroke
Oil Capacity
Oil Capacity - (Models with Oil Xtend)
Spark Plug Gap
Spark Plug Torque
Armature Air Gap - EFI Models
Armature Air Gap - Carburetor Models
Intake Valve Clearance
Exhaust Valve Clearance
MODEL: 440000
Displacement
Bore
Stroke
Oil Capacity
Oil Capacity - (Models with Oil Xtend)
Spark Plug Gap
Spark Plug Torque
Armature Air Gap - EFI Models
Armature Air Gap - Carburetor Models
Intake Valve Clearance
Exhaust Valve Clearance
MODEL: 490000
Displacement
Bore
Stroke
Oil Capacity
Oil Capacity - (Models with Oil Xtend)
Spark Plug Gap
Spark Plug Torque
Armature Air Gap - EFI Models
Armature Air Gap - Carburetor Models
Intake Valve Clearance
Exhaust Valve Clearance
40.03 ci ( 656 cc)
2.970 in (75,43 mm)
2.890 in (73,41 mm)
66 - 68 oz (1,9 - 2,0 L)
75 oz (2,2 L)
.030 in (,76 mm)
175 lb-in (19.2 Nm)
.028 - .052 in (,07 - 1,32 mm)
.008 - .012 in (,20 - ,30 mm)
.004 - .006 in (,10 - ,15 mm)
.004 - .006 in (,10 - ,15 mm)
44.18 ci ( 724 cc)
3.120 in (79,24 mm)
2.890 in (73,41 mm)
66 - 68 oz (1,9 - 2,0 L)
75 oz (2,2 L)
.030 in (,76 mm)
175 lb-in (19.2 Nm)
.028 - .052 in (,07 - 1,32 mm)
.008 - .012 in (,20 - ,30 mm)
.004 - .006 in (,10 - ,15 mm)
.004 - .006 in (,10 - ,15 mm)
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)
75 oz (2,2 L)
.030 in (,76 mm)
175 lb-in (19.2 Nm)
.028 - .052 in (,07 - 1,32 mm)
.008 - .012 in (,20 - ,30 mm)
.004 - .006 in (,10 - ,15 mm)
.004 - .006 in (,10 - ,15 mm)
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