1996 Johnson Evinrude "ED" 90 CV 88 thru 115 Service Manual, P/N 507126, Page 168Get this manual
11417 Clean and degrease the exhaust housing and adapter mating surfaces with OMC Cleaning SolventApply OMC Gel-Seal II to adapter flange of the outer exhaust housingPlace the adapter onto the outer exhaust housingHand tighten the five small retaining screws
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rr7l9Align the adapter with outer exhaust housing by placing two or more of the long powerhead retaining screws through the adapter and outer exhaust housing10Apply OMC Nut Lock to threads of the front two upper thrust mount screwsPlace the ground lead CD under head of the starboard screw