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Look For Relevant
Emissions
Durability
Period and Air
Index Information
On Your Engine Emission
Label
Engines that are certified to meet the California Air Resources Board (CARB) Tier 2
Emission Standards must display information regarding the Emissions Durability Pe-
riod and the Air Index. Sears, Roebuck and Co., U.S.A. makes this information avail-
able 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 fol-
lowing 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 en-
gine 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 Sears, Roebuck and Co., U.S.A. 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.
Engines that are certified to meet the California Air Resources Board (CARB) Tier 2
Emissions
Standard must display information regarding the Emissions
Durability
Period and the Air Index. Sears, Roebuck and Co., U.S.A. makes this information
available to the consumer on our emissions labels. The engine emissions label will
indicate certification information.
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
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