1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 169Get this manual
Cleaning and Inspection 1Inspect clamp screw assemblyReplace swivel plate and retainer if bent or looseTo install new swivel plate remove screw and old plateApply GMC Locquic Primer to the threads of the screw and allow it to dry four to five minutesThen apply GMC Ultra Lock to threadsInstall new swivel plate with screw and tighten securely2Clean all parts with parts cleaning solvent and dry with compressed airAll nut and screw threads coated with GMC Screw Lock or GMC Nut Lock must be thoroughly cleaned before reassemblyWhen using an OMC thread locking product, be sure to prime the adhesion surfaces with GMC Locquic Primer3Discard all oil seals, a-rings, and gaskets4 Examine the rubber motor mounts and replace if deteriorated or damaged5 Before checking the exhaust housing for distortion, thoroughly clean the top and bottom mating surfaces and remove all sealer and corrosion