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Specifications
We recommend that you use an authorized Briggs &
Stratton Service Dealer for all maintenance and service
of the engine and engine parts. Use only genuine
Briggs & Stratton parts.
In the state of California, Model Series 290000, 300000,
350000 and 380000 engines are certified by the
California Air Resources Board to meet emissions
standards for 250 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 Series 290000 and 300000
Bore 2.68 in. (68 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 2.6 in. (66 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 29.3 cu. in. (480 cc). . . . . . . . . . . . . . . . . .
Model Series 350000
Bore 2.83 in. (72 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 2.76 in. (70 mm). . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 34.7 cu. in. (570 cc). . . . . . . . . . . . . . . . . .
Model Series 380000
Bore 2.97 in. (75.5 mm). . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 2.76 in. (70 mm). . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 38.2 cu. in. (627 cc). . . . . . . . . . . . . . . . . .
Tune-up Specifications
Models 200000/210000
Armature air gap 0.008 − 0.012 in. (0.20 − 0.30 mm). .
Spark plug gap 0.030 in. (0.76 mm). . . . . . . . . . . . . . . . .
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 272144.
Intake 0.004 − 0.006 in. (0.10 − 0.15 mm). . . . . . . . . . . .
Exhaust 0.004 − 0.006 in. (0.10 − 0.15mm). . . . . . . . . . .
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 Series
Type
Code
Technical Information
Power Ratings: The power ratings for an individual
engine model are initially developed by starting with
SAE (Society of Automotive Engineers) code J1940
(Small Engine Power & Torque Rating Procedure)
(Revision 2002-05). Given both the wide array of
products on which our engines are placed, and the
variety of environmental issues applicable to operating
the equipment, it may be that the engine you have
purchased will not develop the rated horsepower when
used in a piece of power equipment (actual “on-site”
power). This difference is due to a variety of factors
including, but not limited to, the following: differences in
altitude, temperature, barometric pressure, humidity,
fuel, engine lubrication, maximum governed engine
speed, individual engine to engine variability, design of
the particular piece of power equipment, the manner in
which the engine is operated, engine run-in to reduce
friction and clean out of combustion chambers,
adjustments to the valves and carburetor, and other
factors. The power ratings may also be adjusted based
on comparisons to other similar engines utilized in
similar applications, and will therefore not necessarily
match the values derived using the foregoing codes.
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.