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Craftsman 247.770120 Operator's Manual page 35

6.5 horse power yard vacuum
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Look For Relevant
Emissions
E)urabHity
Period
and
Air hde×
mnformation
On Your Engine
Emissions
Labe_
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. 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
& Mainte-
nance 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 Ju_y 1,2000,
Look For Emissions
Compliance
Period
On Engine
Emissions
Compliance
Labe_
After July 1, 2000 certain Sears, Roebuck and Co., U.SoA. engines will be certified
to meet the United States
Environmental
Protection
Agency (USEPA) Phase 2 emission
standards.
For Phase 2 certified
engines, the Emis-
sions 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.
This is a generic representation of the emission label typically found on a certified engine.
35

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