Yamaha F4 Manuel De L'utilisateur page 26

Specifications and requirements
EMU40331
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 meet-
ing these standards have 75% lower emis-
sions than conventional carbureted two-
stroke engines. These engines are equivalent
to the U.S. EPA's 2006 standards for marine
engines.
EMU40341
Two Stars—Very Low Emission
The two-star label identifies engines that
meet the Air Resources Board's Personal
Watercraft and Outboard marine engine 2004
exhaust emission standards. Engines meet-
ing these standards have 20% lower emis-
sions than One Star-Low-Emission engines.
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EMU40351
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 ex-
haust emission standards. Engines meeting
these standards have 65% lower emissions
than One Star-Low-Emission engines.
ZMU01702
EMU33862
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.
ZMU01703
ZMU01704
ZMU05663