Craftsman 580.7523 manual Emission information

Emission information

Enginesthat are certified to meetthe CaliforniaAir Resources Board(CARB) Emission Standards must display information regardingthe Emissions Durability Periodand Air Index. The engine manufacturer makesthis information availableto the consumer on emission labels. The engine emission labelwill indicate certification information.

The EmissionsDurabilityPeriod describes the number of hours of actual running time for which the engine is certified to beemissions compliant, assuming proper maintenancein accordancewith the Operating & Maintenance Instructions. The following categories are used:

Moderate: Engineis certified to be emission compliant for 125 hours of actual engine running time.

Intermediate: Engineis certified to beemission compliant for 250 hours of actual engine running time.

Extended:Engineis certified to beemission compliant for 500 hours of actual engine running time.

Forexample, a typical walk-behind lawn mower is used 20 to

25hours per year. Therefore, the EmissionsDurability Period of an engine with an intermediate rating would equateto 10to 12 years.

Certainengines will be certified to meetthe 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 Federalemission requirements.

For engines less than 225 cc displacement:

CategoryC = 125 hours

Category B = 250 hours

CategoryA = 500 hours.

For engines of 225 cc or more displacement:

CategoryC = 250 hours

Category B = 500 hours

CategoryA = 1000 hours.

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