1980 Johnson 4HP Service Manual, Page 62Get this manual
Place new gasket the exhaust housingApply oil liquid soap to end of water tubeAssembIe powerhead to exhaust housing, and torque attaching screws to specifications outlined in Section 2dCoat driveshaft splines with Moly Lube Part No173250not coat top su rface of shaft as lubricant here prevent seating of driveshaft in crankshaftInstall gearcase exhaust housing making sure water tube enters grommet of water pump fInstall leaf plate assembIy, intake manifold, and carburetor as described in 3gInstall ignition components and flywheel as described in Section 4hTank test motor using test propellerCheck cooling and adj ust carburetor1Lower bearing snap ring 2Lower crankshaft seal Figure 5-22Lower Bearing Snap Ring and Seal