2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 215Get this manual
MIDSECTION EXHAUST HOUSING inner and outer housing looseLift the adapter from the exhaust housing
Assembly
Apply Gasket Sealing Compound to new exhaust relief gasketPosition the gasket and plateInstall the exhaust relief baffleApply HT 400 to threads of the retaining screwsInstall and tighten the screws 60 to 84 inIbs(7 to 9.5 Nm)Check the condition of all midsection componentsReplace if necessary Lower inner exhaust housing seal