1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 176Get this manual
Remove the exhaust relief plateDiscard the gasketAssembly
1sl1Apply OMC Gasket Sealing Compound to new exhaust relief gasketPosition the gasket and plater:;J 2Install the exhaust relief baffleApply OMC HT 400 to threads of the retaining screwsInstall and tighten the screws to 60-84 inIbs(7-9 Nm)
3Check the condition of the following componentsReplace if
necessary
[!] Lower inner exhaust housing seal
1101 Exhaust relief gr ommet, lower engine cover seal
[!!J Lower crankcase head grommet
1121 Shift rod grommet f1314Apply OM.C Gel-Seal" to
exhaust housmgthe top flange of the outer