(a) Set evaporative emission standards for gasoline-fueled, spark-ignited small off-road engines rated at equal to or less than 19 Kilowatts, and equipment utilizing such engines;

(b) In order to give manufacturers maximum flexibility, certification programs are available beginning the 2006 model year. The two options are identified in section 2754(a) and in section 2754(b), and require running loss emissions to be controlled during engine operation, which results in greater evaporative emissions reductions. Manufacturers must select one option for each evaporative family they certify through the 2023 model year. Beginning with model year 2024, manufacturers must certify each evaporative family to meet the hot soak plus diurnal emission standards in section 2754(a).