1994 Johnson/Evinrude "ER" 60 thru 70 outboards Service Manual, Page 177Get this manual
Cleaning and Inspection 1Clean all parts with parts cleaning solvent and dry with compressed airAll nut and screw threads coated with OMC Screw Lock or OMC Nut Lock must be thoroughly cleaned before assemblyWhen using thread locking product, be sure to prime the threads with OMC Locquic Primer
2Discard all seals, a-rings, and gaskets3Examine the upper and lower thrust mounts, and replace if deteriorated or damaged 4Before checking the exhaust housing for distortion, thoroughly clean the top and bottom mating surfaces and remove all sealer and corrosion
rv 5Check the exhaustUsing dial distortioncheck the housing housing for Place on surface plateindicator, flatness by