Table of Contents
Advertisement
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, the 120000 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,
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 and emissions
warranties stated elsewhere in this manual.
Model 120000
Bore
. . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke
. . . . . . . . . . . . . . . . . . . . . . . .
Displacement
. . . . . . . . . . . . . . . . .
Tune-up Specifications
Armature air gap
. .
0.006 − 0.010 in. (0.15 − 0.25 mm)
Spark plug gap
. . . . . . . . . . . . . . . . .
Valve clearance with valve springs installed and piston
1/4 in. (6 mm) past top dead center (check when
engine is cold). See Repair Manual P/N 270962.
Intake
. . . . . . . . . . . .
0.005 − 0.007 in. (0.13 − 0.18 mm)
Exhaust
. . . . . . . . . .
0.005 − 0.007 in. (0.13 − 0.18 mm)
Note: For practical operation, the horsepower loading should not
exceed 85% of rated horsepower. Engine power will decrease
3-1/2% for each 1,000 feet (300 meters) above sea level and 1%
for each 10° F (5.6° C) above 77° F (25° C). It will operate
satisfactorily at an angle up to 15°.
Model, Type and Code Number
To get replacement parts or technical assistance in the
future write your engine Model, Type and Code number
along with the date of purchase here. These numbers
are located on your engine. For the location, see page
3, Engine Features.
Model
Type
Code
10
2.69 in. (68.26 mm)
2.05 in. (51.99 mm)
11.57 cu. in. (190 cc)
0.030 in. (0.76 mm)
Technical Information
Engine Power Rating Information
The gross power rating for individual gas engine
models is labeled in accordance with SAE (Society of
Automotive Engineers) code J1940 (Small Engine
Power & Torque Rating Procedure), and rating
performance has been obtained and corrected in
accordance with SAE J1995 (Revision 2002-05).
Torque values are derived at 3060 RPM; horsepower
values are derived at 3600 RPM. Actual gross engine
power will be lower and is affected by, among other
things, ambient operating conditions and
engine-to-engine variability. Given both the wide array
of products on which engines are placed and the
variety of environmental issues applicable to operating
the equipment, the gas engine will not develop the
rated gross power when used in a given piece of power
equipment (actual "on-site" or net horsepower). This
difference is due to a variety of factors including, but
not limited to, accessories (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 Series engine.
Emission Information
Engines that are certified to meet the California Air Resources
Board (CARB) Tier 2 Emission Standards must display
information regarding the Emissions Durability Period and the
Air Index. Briggs & Stratton makes this information available to
the consumer on our emission labels. The engine emission
label will indicate certification information.
The Emissions Durability Period describes the number of
hours of actual running time for which the engine is certified to
be emissions compliant, assuming proper maintenance in
accordance with the Operating & Maintenance Instructions.
The following categories are used:
Moderate:
Engine is certified to be emission compliant for 125 hours of
actual engine running time.
Intermediate:
Engine is certified to be emission compliant for 250 hours of
actual engine running time.
Extended:
Engine is certified to be emission compliant for 500 hours of
actual engine running time. For example, a typical walk-behind
lawn mower is used 20 to 25 hours per year. Therefore, the
Emissions Durability Period of an engine with an
intermediate rating would equate to 10 to 12 years.
Certain Briggs & Stratton engines will be certified to meet the
United States Environmental Protection Agency (USEPA)
Phase 2 emission standards. For Phase 2 certified engines,
the Emissions Compliance Period referred to on the Emissions
Compliance label indicates the number of operating hours for
which the engine has been shown to meet Federal emission
requirements.
For engines less than 225 cc displacement.
Category C = 125 hours
Category B = 250 hours
Category A = 500 hours
For engines of 225 cc or more displacement.
Category C = 250 hours
Category B = 500 hours
Category A = 1000 hours.
Advertisement
Table of Contents
