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The Power In Power Equipment
Thank you for selecting a Briggs & Stratton engine to power your equipment.
Briggs & Stratton is committed to producing a line of engines which will make your life’s chores easier to perform. We have,
at the same time, improved the design of our engines so they are environmentally friendly. Since 1995, we have succeeded
in reducing smog-forming exhaust emissions from our engines by 70%. Briggs & Stratton’s efforts have not stopped there.
We are also committed to designing and introducing even cleaner engines in the future, while maintaining our reputation for
excellent utility and value.
Briggs & Stratton’s environmental awareness has resulted in the engineering of the “Smart-Fill” gas can, featuring a spill
resistant nozzle which opens only when fully inserted into the gas tank, and which shuts off automatically when the tank is
full. Because refueling spills can harm the environment, the Smart-Fill container helps preserve a stronger ecosystem by
reducing this source of pollution.
We hope you will enjoy your new engine and equipment. We welcome you to our worldwide family of Briggs & Stratton
engine users.
Best Wishes Always,
The Employees of Briggs & Stratton Corporation
Look For Relevant Emissions Durability Period and
Air Index Information On Your Engine Emissions Label
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 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.
The Air Index is a calculated number describing the relative level of emissions for a specific engine family. The lower the
Air Index, the cleaner the engine. This information is displayed in graphical form on the emissions label.
After July 1, 2000, Look For Emissions Compliance Period On
Engine Emissions Compliance Label
After July 1, 2000 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, B = 250 hours
and A = 500 hours. For engines of 225 cc or more, Category C = 250 hours, B = 500 hours and A = 1000 hours.
The displacement of Model Series 280000 engines is 465 cc. The displacement of Model Series 310000 engines is 501 cc.
This is a generic representation
of the emission label typically
found on a certified engine.