1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 159Get this manual
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Position Cylinder Block and Piston Rods, as shownNote locating pins INSTALLING RODS TO CRANKSHAFT Pull rod up to position shownGrease rod, bearing area, with Needle Bearing Assembly Lubricant or 2-4-C