1993 Johnson Evinrude "ET" 60 thru 70 Service Manual, P/N 508284, Page 90Get this manual
7Use sharp pencil to mark the edges of leaf valves rJlSUse pencil eraser to gently open the leaf valves to check
the alignment of the valve over the portValves should be spaced evenly over portIf not, loosen mounting screws and reposition leaf valve9After leaf valve is positioned properly, install remaining screwsTighten all screws evenly to torque of 25-35 inIbs(3-4 Nm)10Apply OMC Locquic Primer nd OMC Nut Lockto the leaf plate assembly to manifold screws11 Using new gaskets installed dry, position each leaf plate assembly and torque the screws to 25-35 in Ibs(3-4 Nm)Installation