Honda F220 Owner's Manual page 55

Air Index
(Models certified for sale in California)
An Air Index Information label is applied to engines certified to an emission
durability time period in accordance with the requirements of the California
Air Resources Board.
The bar graph is intended to provide you, our customer, the ability to
compare the emissions performance of available engines. The lower the Air
Index, the less pollution.
The durability description is intended to provide you with information relating
to the engine's emission durability period. The descriptive term indicates the
useful-life period for the engine's emission control system. See your
Emission Control Warranty for additional information.
Descriptive Term
Moderate
Intermediate
Extended
TECHNICAL INFORMATION
Applicable to Emissions Durability Period
50 hours (0 – 80 cc, inclusive)
125 hours (greater than 80 cc)
125 hours (0 – 80 cc, inclusive)
250 hours (greater than 80 cc)
300 hours (0 – 80 cc, inclusive)
500 hours (greater than 80 cc)
1,000 hours (225 cc and greater)
53