1994 Johnson/Evinrude "ER" 60 thru 70 outboards Service Manual, Page 75Get this manual
Assembly
When assembling the fuel piston, always install new washer and stem in addition to other new parts requiredBe sure to lightly tighten stem with fingers, never with pliers
f61 Lubricate stem with Evinrude or Johnson Outboard Lubricant
and slide it into hole in center of intermediate housing rJl lnstall new washer on air motor piston screwThen, thread air motor piston onto stem with clockwise rotationPush poppet valve in (toward the stem) to hold the screw in place while turningTighten 114 turn past point of contact