1998 Johnson Evinrude "EC" 40 thru 55 2-Cylinder Service Manual, P/N 520206, Page 219Get this manual
27Carefully apply OMC Gasket Sealing Compound to the -ring flange and aft support flange of the propeller shaft bearing housing28Apply OMC Needle Bearing Assembly Grease to the reverse gear thrust washerPlace the thrust washer in the propeller shaft bearing housing
29Install the propeller shaft bearing housing in the gearcase with screw holes in vertical position and drain slot facing down
30Apply OMC Nut Lock to threads of the propeller housing retainer screwsInstall the retainers and tighten the screws to 120-144 inIbs(14-16 Nm)
31Before installing lubricant, pressure test and vacuum test the gearcase as follows: Remove the oil level plug, and install pressure test gauge Pump up pressure 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 Install vacuum testerPump out to 3-5 inches (76-127 mm) Hg and see if vacuum holdsThen, pump out to 15 inches (381 mm) Hg and checkIf the gearcase fails to hold on either test, put oil around suspected sealIf leak then stops or oil is drawn in, that seal is defectiveWhen the gearcase checks OK, refill with the proper lubricant