Craftsman 536.270301 Operator's Manual page 37

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 regard-
ing the Emissions Durability Period and the Air Index. Sears, Roebuck and Co., U.S.A. 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 en-
gine 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 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 Emis-
sions Compliance label indicates the number of operating hours for which the engine has been shown to meet Federal emission require-
ments. 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 engines
The displacement engines
The displacement engines
The displacement engines
The displacement engines
The displacement engines
of Model Series 90000 is 148 cc.
of Model Series 120000 is 206 cc.
of Model Series 190000 is 319 cc.
of Model Series 200000 is 305 cc.
of Model Series 210000 is 342 cc.
of Model Series 280000 is 465 cc.
This is a generic representation of the emission label typically found on a certified engine.
FAMILY YBSXS_192VA 274812
F-050610L 37