General and important labels
One Star - Low Emission
The one-star label identifies engines that meet the Air Resources Board’s Personal Watercraft and Outboard marine engine 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two- stroke engines. These engines are equivalent to the U.S. EPA’s 2006 standards for marine engines.
Two Stars - Very Low Emission
The two-star label identifies engines that meet the Air Resources Board’s Personal Water- craft and Outboard marine engine 2004 exhaust emission standards. Engines meeting these standards have 20% lower emissions than One Star-Low Emission engines.
Three Stars - Ultra Low Emission
The three-star label identifies engines that meet the Air Resources Board’s Personal Watercraft and Outboard marine engine 2008
exhaust emission standards or the Sterndrive and Inboard marine engine 2003-2008 exhaust emission standards. Engines meeting these standards have 65% lower emissions than One Star-Low Emission engines.
Four Stars - Super Ultra Low Emission
The four-star label identifies engines that meet the Air Resources Board’s Sterndrive and Inboard marine engine 2009 exhaust emission standards. Personal Watercraft and Outboard marine engines may also comply with these standards. Engines meeting these standards have 90% lower emissions than One Star-Low Emission engines.
