Mercury 225 Pro XS User Manual page 23

WARRANTY INFORMATION
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 emissions
standards or the Sterndrive and Inboard marine
engine 2003‑2008 exhaust emission standards.
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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
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standards have 90% lower emissions than One Star ‑
Low Emission engines.
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