Briggs & Stratton Engine 277039 Operators Manual

11
Changing Oil
Change oil after first 5 to 8 hours of use , then every 50
hours or every season. Change oil every 25 hours when
operating the engine under heavy load or in high
temperatures.
1. Run engine until it runs out of fuel. Otherwise, fuel can leak out, creating a fire/explosion hazard,
when you tip engine in Step 4.
2. Disconnect spark plug wire and keep it away from spark plug.
3. With engine OFF but still warm remove dipstick.
4. Top oil drain, keep spark plug side up. Bottom or side oil...

12
Adding Fuel
1. Remove cap. Fill tank to approximately one inchbelow top of neck to allow for fuel expansion. Be
careful not to overfill.
2. Replace cap before starting.
Fuel Fill
• Turn engine OFF and let engine
cool at least 2 minutes before
removing gas cap.
• Fill fuel tank outdoors or in
well-ventilated area.
• Do not overfill fuel tank. Fill tank to
approximately 1 inches below top of
neck to allow for fuel expansion.
• If fuel spills, wait until it evaporates
before starting engine.
• Keep...

13
Engine Specifications
This is a single cylinder, L-head, air-cooled engine. It is
a low emissions engine.
In the state of California, model 120000 engine covered
in this manual is certified by the California Air
Resources Board to meet emissions standards for 125
hours. Such certification does not grant the purchaser,
owner or operator of this engine any additional
warranties with respect to the performance or
operational life of this engine. This engine is warranted
solely according to the product...

14
Engine Maintenance
Regular maintenance will improve the performance and
extend the life of the engine. See any Authorized Briggs
& Stratton Dealer for service. Use only genuine
Briggs & Stratton parts. Other parts may not
perform as well, may damage the engine, and may
result in injury. In addition, use of other parts may void
your warranty.
Emission Control
Maintenance, replacement or repair of the emission
control devices and systems may be performed by
any nonroad engine repair establishment or...

15
Air Cleaner
All engines have an air cleaner cartridge. The cartridge
is either flat or oval (see illustrations). In addition, some
engines have a pre-cleaner.CAUTION
Do not use pressurized air or solvents to clean
cartridge. Pressurized air can damage cartridge;
solvents will dissolve cartridge.
Pre-cleaner
To clean pre-cleaner (if equipped), separate it from
cartridge and wash in liquid detergent and water. Air dry
thoroughly. Do not oil. Re-assemble dry pre-cleaner on
clean cartridge.
 Flat Air...

16
Combustion Deposits
We recommend that after every 100-300 hours you have an authorized Briggs \
& Stratton Service Dealer remove
combustion deposits from the cylinder, cylinder head, top of piston, and around valves.
Muffler
Replacement parts for the muffler must be the same
and installed in the same position as the original parts,
otherwise fire can occur.
WARNING
Fuel System
Drain fuel tank or close fuel shut-off valve before
replacing fuel filter. Otherwise, fuel can leak out
creating a...

17
Storage
Engines stored over 30 days need special attention.
1. To prevent gum from forming in fuel system or onessential carburetor parts:
a) if fuel tank contains oxygenated or reformulated
gasoline (gasoline blended with an alcohol or an
ether), run engine until it stops from lack of fuel,
or b) if fuel tank contains gasoline, either run engine
until it stops from lack of fuel, or add a gasoline
additive to the gas in the tank. (See parts list.
Single −use pouches of gas additive are available
from...

18
Warranty Information
Briggs & Stratton Corporation (B&S), the California Air Resources Board (CARB)and the United States Environmental Protection Agency (U.S. EPA) Emissions Control System Warranty Statement 
(Owner’s Defect Warranty Rights and Obligations)
The California Air Resources Board (CARB), U.S. EPA and
B&S are pleased to explain the Emissions Control System
Warranty on your small off-road engine (SORE). In
California,  new small off-road engines model year 2006 and
later must be designed,...

19 LIMITED WARRANTY
Briggs & Stratton Corporation will repair or replace, free of charge, any part(s) of the engine that is defective
in material or workmanship or both. Transportation charges on parts submitted for repair or replacement
under this warranty must be borne by purchaser. This warranty is effective for and is subject to the time
periods and conditions stated below. For warranty service, find the nearest Authorized Service Dealer in
our dealer locator map at www.briggsandstratton.com, or by...

20
Briggs & Stratton welcomes warranty repair and
apologizes to you for being inconvenienced. Any
Authorized Service Dealer may perform warranty
repairs. Most warranty repairs are handled routinely,
but sometimes requests for warranty service may not
be appropriate. For example, warranty would not apply
if engine damage occurred because of misuse, lack of
routine maintenance, shipping, handling, warehousing
or improper installation. Similarly, warranty is void if
the serial number of the engine has been...