Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 193Get this manual

Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 193

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Cleaning and Inspection Cylinder Block and Crankcase Cover

Inspect cylinder bores for scoring (a transfer of aluminum from piston to cylinder wall)Cylinder wall scoring usually can be "cl