1995 Johnson/Evinrude Outboards 9.9, 15 four-stroke Service Manual, Page 165Get this manual
25Apply ONIC Gasket Sealing Compound to the threads of the bearing housing screwsInstall the screws and tighten to 60-84 inIbs(7-9 Nm)[] 26Install the driveshaftRotate the driveshaft to allow the splines in the pinion to engage the splines on the driveshaft [I]
27Pressure and vacuum test the gearcase as follows:
INote Pressure and vacuum test gearcase before filling Remove the oil level plug and screw in pressure test gauge Hold down firmly on the driveshaft and 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, hold the driveshaft down and 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 out to 3-5 inof mercury and see if vacuum holdsThen pump out to 15 inof mercury 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 out OK, refill with ONIC Ultra-HPF gearcase lubricant[] 28Fill the gearcase with 8-9 floz(230-260 ml) lubricant as follows: Secure the gearcase in an upright position Remove the oil level and the oil filldrain plugsReplace the seals Fill the gearcase with CWIC Ultra-HPF gearcase lube until lubricant appears at the oil level holeInsert the oil level plug firstInstall the filldrain plugTighten the oil level and the filldrain plugs to 84-86 inIbs(9-10 Nm) Inspect the gearcase oil level after motor test has been performed29Inspect water pump as described in Water Pump Servicing, this Section