1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 230Get this manual
5Examine the water deflectors in the cylinder water passagesThe water deflectors direct water circulationReplace the deflectors if deterioratedUse the correct replacement part number as specified in the part catalogFailure to use the proper replacement part could result in engine damage through overheating6Remove the screws from the outer exhaust coverRemove the outer and inner exhaust covers and discard the gaskets7Remove intake by-pass coversFour of these covers are interchangeable but the cover on which the starter solenoid and the one on which the ignition system terminal block are mounted are differentRemove the upper