1991 Johnson/Evinrude EI Outboards 2.3 thru 8 Service Manual, Page 185Get 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 OMC Locquic Primer to the threads of the screw and allow it to dry four to five minutesThen apply OMC 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 OMC Screw Lock or OMC Nut Lock must be thoroughly cleaned before reassemblyWhen using an OMCthread locking product, be sure to prime the adhesive surfaces with OMC Locquic Primer3Discard all oil seals, a-rings and gaskets4Examine the rubber mounts and replace if deteriorated or damaged5Inspect components for nicks on the machined surfacesRemove nicks and resurface faces on surface plateStart with No120 emery cloth and finish with No180 emery clothf1l 6Check the exhaust housing for distortionPlace the housing on surface plateUsing dial indicator, check flatness by measuring the run-out on the top edge of the housingThe maximum allowable run-out is 0.009 in(0,228 mm)If you do not have access to dial indicator and surface plate, seek the services of machine shopDO NOT attempt to straighten distorted housing; replace itA distorted exhaust housing will cause the upper driveshaft splines to wear excessively and will damage the crankshaft splines7Inspect water tube for obstructions or kinks which may restrict water flow8Inspect shift components for wearReplace if deteriorated or damaged