1994 Johnson/Evinrude "ER" 60 thru 70 outboards Service Manual, Page 318Get this manual
134116With the tilt cylinder secured in soft-jaw vise, slide the band over the cylinderOil and install the O-ring on the band nutInstall the band nut into the cylinderInstall the band nut loosely
135117Slide the piston and rod assembly into the cylinder but do
not engage the threads of the capSet the assembly aside at this timewashersRemove the oil reservoir from the manifold
136118Remove the three oil reservoir retaining screws with
137119Clean and inspect the oil reservoir, retaining screws,
washers, and O-ringReplace any components, if necessaryreservoir filter Q)