Emissions
90-8M0050731 MAY 2011 Page 3D-3
Manufacturer's Responsibility
Beginning with 1998 model year engines, manufacturers of all marine propulsion engines must determine the exhaust emission
levels for each engine horsepower family and certify these engines with the United States Environmental Protection Agency (EPA).
A certification decal/emissions control information label, showing emission levels and engine specifications directly related to
emissions, must be placed on each engine at the time of manufacture.
Dealer Responsibility
When performing service on all 1998 and newer outboards that carry a certification, attention must be given to any adjustments
that are made that affect emission levels.
Adjustments must be kept within published factory specifications.
Replacement or repair of any emission related component must be executed in a manner that maintains emission levels within
the prescribed certification standards.
Dealers are not to modify the engine in any manner that would alter the horsepower or allow emission levels to exceed their
predetermined factory specifications.
Exceptions include manufacturer's prescribed changes, such as that for altitude adjustments. Also included would be factory
authorized:
• Installation of performance style gear housings by Mercury Marine.
• Service replacement parts modified, changed, or superceded by Mercury Marine.
Owner Responsibility
The owner/operator is required to have engine maintenance performed to maintain emission levels within prescribed certification
standards.
The owner/operator is not to modify the engine in any manner that would alter the horsepower or allow emission levels to exceed
their predetermined factory specifications.
Single engine exceptions may be allowed with permission from the EPA for racing and testing.
EPA Emission Regulations
All new 1998 and newer outboards manufactured by Mercury Marine are certified to the United States Environmental Protection
Agency as conforming to the requirements of the regulations for the control of air pollution from new outboard motors. This
certification is contingent on certain adjustments being set to factory standards. For this reason, the factory procedure for servicing
the product must be strictly followed and, whenever practicable, returned to the original intent of the design.
The responsibilities listed above are general and in no way a complete listing of the rules and regulations pertaining to the EPA
laws on exhaust emissions for marine products. For more detailed information on this subject, you may contact the following
locations:
VIA U.S. POSTAL SERVICE:
Office of Mobile Sources Engine Programs and Compliance Division Engine Compliance Programs Group (6403J)
401 M St. NW
Washington, DC 20460,
VIA EXPRESS or COURIER MAIL:
Office of Mobile Sources Engine Programs and Compliance Division Engine Compliance Programs Group (6403J)
501 3rd St. NW
Washington, DC 20001,
EPA INTERNET WEB SITE: http:/www.epa.gov/omswww
Service Replacement EPA Decal
IMPORTANT: By federal law, it is required that all 1998 and newer Mercury Marine outboards have a visible and legible emission
certification decal. If this decal is missing or damaged, contact Mercury Marine Warranty Registration for a replacement.
Removal
Remove all remaining pieces of the damaged or illegible decal. Do not install the new decal over a damaged old decal. Use a
suitable solvent to remove any traces of the old decal adhesive from the display location.
NOTE: If the original decal surface is in good condition, it is acceptable to clean the surface and apply the new decal over the
original.
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