Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 44Get this manual

Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 44

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DETERMINING PISTON CLEARANCE 1 Measure the outside diameter of the piston at the piston skirt and at right angle to the piston pin Obtain maximum piston diameter2 Measure cylinder bore and obtain mini