1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 226Get this manual

1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 226

127127Carefully apply OMC Gasket Sealing Compound to the O-ring flange and aft support flange of the propeller shaft bearing
the gearcase as follows: Remove the oil level plug, and screw in 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 Screw in vacuum testerPump
outto 3-5 in(76-127 mm) of mercury and see if vacuum holdsThen, pump outto 15 in(381 mm) of mercury and checkIf the gearcase