Re: How to identify lower unit, with no upper part of engine ??
Suggest getting on the mercruiserparts.com website.<br />They have exploded view diagrams of all Force motors.<br /><br />Key features to help narrow it down:<br />Thru hub exhaust, exhaust snout, or both?<br />color, white, 80's USMarine, charcoal, Mercury Force.<br />Prop shaft diameter and number of splines.<br />Driveahaft splines.<br />Waterpump type.<br />Shiftshaft connection - cotterpin-older, threaded-newer.