[spareparts]

get a mercuiser manual, they detail repalceing the gimbal ring by drilling two holes in teh top of the transom plate( you plug the holes with plastic pipe plugs), You use a template thats in the manual to locate the holes, after you have the access holes, you use a punch and hammer to loosen the nut( thats why that nut has notches on it), read the manual, the top nut is not supposed to be tight, its the cross bolt and nut thats supposed to be tight. The manual lays out the procedure and process for setting up the proper endplay and clearance to prevent binding