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 prevent air flow and cause the engine to
become too hot and result in unsatisfactory performance and decreased engine life.
1. Use a brush or dry cloth to remove debris from the air intake grille.
2. Keep linkage, springs, and controls clean.
3. Keep the area around and behind the muffler, if equipped, free of combustible
debris.
4. Make sure the oil cooler fins, if equipped, are clean.
After a period of time, the cylinder cooling fins can collect debris and cause the engine
to overheat. Thisunwanted materialcannot be removed without partial disassembly of
the engine. Have a Briggs & Stratton Authorized Service Dealer inspect and clean the
air cooling system as recommended in the Maintenance Schedule.
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 (normal 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 analcohol-free fuel stabilizer and ethanol treatmentin the fuel storage container is
recommended to prevent fuel degradation and keep the fuel fresh.
When you fill the fuel container with fuel, addan 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.
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
MODELS: 290000, 300000
Displacement 29.23 ci (479 cc)
Bore 2.677 in (68 mm)
Stroke 2.598 in (66 mm)
Oil Capacity 46 - 48 oz (1,36 - 1,42 L)
Spark Plug Gap .030 in (,76 mm)
Spark Plug Torque 180 lb-in (20 Nm)
Armature Air Gap - Carburetor Models .008 - .012 in (,20 - ,30 mm)
Intake Valve Clearance .004 - .006 in (,10 - ,15 mm)
MODELS: 290000, 300000
Exhaust Valve Clearance .004 - .006 in (,10 - ,15 mm)
MODEL: 350000
Displacement 34.78 ci (570 cc)
Bore 2.835 in (72 mm)
Stroke 2.756 in (70 mm)
Oil Capacity 46 - 48 oz (1,36 - 1,42 L)
Spark Plug Gap .030 in (,76 mm)
Spark Plug Torque 180 lb-in (20 Nm)
Armature Air Gap - Carburetor Models .008 - .012 in (,20 - ,30 mm)
Intake Valve Clearance .004 - .006 in (,10 - ,15 mm)
Exhaust Valve Clearance .004 - .006 in (,10 - ,15 mm)
MODEL: 380000
Displacement 38.26 ci (627 cc)
Bore 2.972 in (75,5 mm)
Stroke 2.756 in (70 mm)
Oil Capacity 46 - 48 oz (1,36 - 1,42 L)
Spark Plug Gap .030 in (,76 mm)
Spark Plug Torque 180 lb-in (20 Nm)
Armature Air Gap -Carburetor Models .008 - .012 in (,20 - ,30 mm)
Intake Valve Clearance .004 - .006 in (,10 - ,15 mm)
Exhaust Valve Clearance .004 - .006 in (,10 - ,15 mm)
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 permitted
operating limits on slopes.
MODELS: 290000, 300000, 350000, 380000
Service Part Part Number
Air Filter (with fuel tank, Figure 23) 383857
Air Filter (except Model 380000, Figure 22) 394018
Air Filter (Model 380000, 22) 692519
Air Filter, Pre-cleaner(with fuel tank, Figure 23) 271794
Air Filter, Pre-cleaner (except Model 380000, Figure 22) 272490
Air Filter, Pre-cleaner(Model 380000, Figure 22) 692520
Oil - SAE 30 100028
Oil Filter 842921
Fuel Filter (with fuel tank) 808116
Fuel Filter (with fuel pump) 845125
Fuel Filter(without fuel pump) 298090
Resistor Spark Plug 491055S
Long Life Platinum Spark Plug 696202, 5066K
Spark Plug Wrench 19576S
Spark Tester 84003327
We recommend that you see a Briggs & Stratton Authorized Dealer for all maintenance
and servicing 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,
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