The rule regulates exhaust emissions from new spark-ignition ( SI ) gasoline marine engines including outboard engines , personal watercraft engines and jet boat engines beginning with the 1998 model year and the rule is fully phased-in by the 2006 model year .
The rule is in place to regulate exhaust emissions for new spark-ignition ( SI ) gasoline marine engines . The rule applies to models made in the year 1998 and onwards . The rule has been fully phased-in by the 2006 model year .