Mercury V6 175 Diagnostic Manual page 19

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. Additional exceptions include
factory authorized:
• Installation of performance style gear housings by Mercury Marine.
• Service replacement parts modified, changed, or superseded by Mercury Marine.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 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
location:
EPA INTERNET WEB SITE:
Manufacturer's Certification Label
The certification label must be placed on each engine at the time of manufacture and must be replaced in the same location if
damaged or removed. Shown below is a typical certification label and is not representative of any one model. Label shown
below is not to scale.
Emissions information provided on label:
• Year (California and U.S. EPA emission regulations)
• Idle speed
• Engine horsepower
• Piston displacement
• Engine power in kilowatts
• Date of manufacture
• US EPA engine family name
• HC+NOx family emissions level
90-8M0146617 eng JULY 2018
EPA.gov
THIS ENGINE CONFORMS TO
EMISSION REGULATIONS FOR SPARK IGNITION MARINE ENGINES
REFER TO OWNERS MANUAL FOR REQUIRED MAINTENANCE,
SPECIFICATIONS, AND ADJUSTMENTS
IDLE SPEED (in gear):
hp hp
kw
SPARK PLUG:
LOW PERM/HIGH PERM:
EMISSION CONTROL
INFORMATION
CALIFORNIA AND U.S. EPA
FAMILY:
L L
HC+NOx:FEL: HC+NOx:FEL:
CO FEL:
GAP:
© 2018 Mercury Marine
Emissions
g/kWh g/kWh
g/kWh g/kWh
67805
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