2002+ Mercury Mariner 150/175/200 EFI 2-stroke Factory Service Manual, Page 312Get this manual

2002+ Mercury Mariner 150/175/200 EFI 2-stroke Factory Service Manual, Page 312

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EMISSIONS
Stoichiometric (14.7:1) AirFuel Ratio

Outboard Hydrocarbon Emissions Reductions
8 13per Year Over Model Years