1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 184Get this manual
Assembly
1Apply OMC Gasket Sealing Compound to both sides of new adapter to exha ust housi ng gasket Place the gasket on the adapter2Secure the inner exhaust housinQ to the adapter
1101 3Slide one water tube grommet and the water tube cover
4 Slide the inner exhaust housing and the adapter into the outer exhaust housing Secure the adapter to the outer exhaust housing
down the water tubePlace second water tube grommet in bore of the adapterAlign the water tube and secure the cover to the adapter
EJ Tighten the screws to torque of 18-20 ftIbs(25-27 Nm)
5Install the two lower side mounts
to the exhaust housing
Install the thrust mount to the housing and tighten the screws to torque of 60-84 in Ibs(7-9 Nm)6Check condition of the shift rod seal necessary