1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 244Get this manual
5Position slot on end of swivel shaft in line with hole in tilt ram endInsert punch into tilt ram hole to align cross hole in upper swivel shaftTap new cross pin in until flush 9Apply Quicksilver Liquid Neoprene (91-255112) on all electrical connections
a Upper Swivel Shaft (Slot is in line with cross hole) Chamfered End of Hole (Faces away from transom) Cross Pin (Tri-lobe Design) Tilt Ram EndHarness RetainerClamp 20290
WARNING
Electrical wires passing through cowl openings must be protected from chafing or being cutFollow the recommended procedures outlined in Section of this ManualFailure to protect wires as described could result in electrical system failure andor injury to occupants of boat
6Connect trim motor wires to solenoidsRefer to Wiring Diagrams in this manualRoute trim wires as specified in this manual7Apply marine sealer to shanks of mount bolts and install transom mount boltsIMPORTANT: Do not use an impact driver to tighten transom mount boltsApply marine sealer to threads of mount boltsSecure with flat washers and locknutsBe sure installation is watertight8Tighten tilt tube nut securelyIMPORTANT: Outboards equipped with thru-thetilt-tube steering: Tighten steering cable retaining nut securely to tilt tube