Briggs & Stratton Engine 277038 Operators Manual

11
Fuel
Type of Fuel to Use
•Use clean, fresh, regular unleaded gasoline with a
minimum of 85 octane. Fresh fuel prevents gum from
forming in the fuel system or on essential carburetor
parts. Purchase fuel in quantity that can be used
within 30 days.
•Do not use gasoline which contains Methanol.
•Do not mix oil with gasoline.
•For engine protection use Briggs & Stratton
Gasoline Additive available from your Authorized
Briggs & Stratton Dealer.
•This engine is certified to operate on gasoline.
Exhaust...

12
Specifications
We recommend that you see an authorized Briggs &
Stratton Service Dealer for all maintenance and service
of the engine and engine parts. Use only genuine
Briggs & Stratton parts.
This is a single cylinder, L-head, air-cooled engine. It is
a low emissions engine.
In the state of California, model 90000 / 100000
engines covered in this manual are certified by the
California Air Resources Board to meet emissions
standards for 125 hours. Such certification does not
grant the purchaser,...

13
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 notperform 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
individual....

14
Air Cleaner
All engines have a foam air cleaner element.
Replace element if very dirty or damaged.CAUTION
Air cleaner filter element must be oiled or engine
damage will occur.
Style 2
COVER
FILTER
ELEMENT
BASE
CUP
Style 1
TO REPLACE FILTER:
•Remove screw.
•Carefully remove air cleaner to prevent debris from falling into carburetor.
•Take air cleaner apart and clean all parts. Wash Oil-Foam element in liquid detergent and water. Squeeze dry in a
clean cloth. Saturate
 Oil-Foam element in engine oil and...

15
Spark Plug
Use only Briggs & Stratton Spark Tester (part number
19368) to check for spark.
.030” (0.76 mm) WIRE GAUGE
Note: In some areas, local law requires using resistor
spark plug to suppress ignition signals. If this engine
was originally equipped with resistor spark plug, use
same type for replacement.
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,...

16
Storage
Engines stored over 30 days need special attention.
[1] To prevent gum from forming in fuel system or on
essential 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...

17
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 
(Owners 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,...

18
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...

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...