1977 Evinrude 4HP Outboards Service Manual, PN 5303, Page 53Get this manual
bUsing new gasket, secure iriller exhaust housing and lower motor cover to power head with the six attaching screwsInstall water tubecPlace new gasket on the exhaust housingApply oil or liquid soap to end of water tubeAssemble power head to exhaust housing, and torque attaching screws to specifications outlined in Section 2dCoat driveshaft splines with OMC Sea- LubeMoly LubeDo not coat top surface of shaft as lubricant here may prevent seating of driveshaft in crankshafteInstall gearcase on exhaust housing making sure water tube enters grommet of water pumpfInstall leaf plate assembly, intake manifold, and carburetor as described in Section 3