Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 137Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 137

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Cylinder Head 1 Inspect the cylinder head for mineral depositS corrosion in the water passage waysclean any depositscorrosion observed2 Inspect the cylinder head for carbon deposits In combustion cham

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