Operating instructions

Emissions Durability Period and Air index information

OnYour Engine Emissions Label

Enginesthat are certified to meetthe California Air ResourcesBoard

(CARB) Tier 2 Emission Standards must display information

regarding the Emissions Durability Period and Air Index.The engine

manufacturer makes this informationavailable to the consumer on

emission labels.

TheEmissions Durabilily Period describes the number of hours of

actual running time for which the engine is certified to be emissions

compliant, assuming proper maintenancein accordance with the

Operating & MaintenanceInstructions. Thefollowing categoriesare

used:

Moderate: Engineis certified to beemission compliant for 125

hours of actual engine running time.

Intermediate: Engine is certified to beemission compliant for 250

hours of actual engine running time.

Extended: Engineis 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 DurabilityPeriod of an

engine with an intermediate rating would equateto 10to 12years.

TheAir 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.

Emissions Compliance Period On Engine Emissions

Compliance Label

After July 1, 2000 certain Sears engineswill be certified to meet the

United States Environmental Protection Agency (USEPA)Phase 2

emission standards. For phase2 certified engines, the Emissions

Compliance Period referred to on the Emissions Compliance label

indicates the number of operating hours for which the engine has

beenshown to meet Federalemission requirements. Forengines

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 engine has a moderate rating with and Air Index of 3. The EPA

Emissions compliance period is Category C.The displacement of

this engine is 147 cc.

Below is a generic representation of the emission labeltypically

found on a certified engine.