Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 178Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 178

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EMISSIONS
When performing service on all 1998 and later outboards that carry certificationattention must be given to any adjustments that are made that affect emission levelsAdjustments must be