1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 337Get this manual
Hydraulic Unit Servicing Removal 1Raise the motor and engage the trailering levers2Remove the blue and green wires from pump motor connector housing3Remove the spring clip from the cylinder pin4Remove the cylinder pinrJl5Remove one ofthe 3J4 inlocknuts from the angle adjustment rodRemove the rod from the stern bracketsf416Remove the unit from the stern brackets far enough to remove the ground lead from the pump motor mounting screwDisassembly Thoroughly clean unit before disassemblingScrub all outside surfaces with stiff bristle brush and hot soapy waterThis will prevent dirt particles or other foreign matter from entering the unit while you are working on it