Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 168Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 168

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4 Inslall balance piston, secure with nut Exhaust Cover Installation
2 Tighten bolts in sequence and in two steps to the specified torque
55812 Bolts (4) Covera-Ring

Exhaust a