1988 Johnson/Evinrude "CC" 40 thru 55 Models Service Manual, Page 195Get this manual
Assembly
EJ new adapter to exhaust housing gasket Place the gasket
on the adapter2Secure the inner exhaust housing to the adapter
1Apply OMC Gasket Sealing Compound to both sides of a
101 3Slide one water tube grommet and the water tube cover
down the water tubePlace second water tube grommet in bore of the adapterAlign the water tube and secure the cover to the adapter
4 Slide the inner exhaust housing and the adapter into the outer exhaust housingSecure the adapter to the outer exhaust housing
EJ Tighten the screws to torque of 18-20 ftIbs(25-27 Nm)Install the thrust mount to the housing and tighten the screws
to torque of 60-84 inIbs(7-9 Nm)
5Install the two lower side mounts tothe exhaust housing