1998 Johnson Evinrude "EC" 2 thru 8 Service Manual, P/N 520202, Page 199Get this manual
11 Position the pinion into gearcase12Install the driveshaftRotate the driveshaft to engage the pinion13Install the pinion retaining ring with sharp side of ring facing out14Lightly apply ave Triple-Guard grease to new gearcase head O-ringInstall the O-ring in groove of the gearcase head15Install the gearcase head on propeller shaft until it seats on gearcase16Install the impeller pin in the propeller shaft 21
17Lightly oil the impeller blades and install the impeller in the gearcase head while turning in clockwise direction, making sure the blades seat18Position the impeller cover
19Apply ave Gasket Sealing Compound to pump cover screwsTighten screws to torque of 60-84 inIbs(7-9 Nm)20Pressure test the gearcase as follows: Remove the oil level plugAttach pressure tester to the gearcase using ave Pressure Gauge Adapter, PIN 115330 Pump pressure up to 3-6 PSI (21 -42 kPa) If pressure gauge indicates leakage, submerge the gearcase in water to determine source of leakage as evidenced by bubblesIf the gearcase pressure gauge does not indicate leakage, increase pressure to 16-18 PSI (110-124 kPa) If pressure does not hold, submerge the gearcase in water and check for source of leakageMake necessary repairs and repeat test