Re: 73 Evinrude 115 Lower End - How to Pressure Test
Drain the gearcase.
Using either the vent or fill plug hole, apply approximately twelve PSI to the gearcase with a pump that has a pressure gauge and the ability to hold pressure. The gearcase should hold pressure for around 45 minutes.
If the gearcase does not hold pressure, add pressure to 15 PSI and look for leaks.
If the leaks are not found, immerse the pressurized unit in water and look for bubbles.
If you need a fitting, you can use the one that comes with a Lubrimatic Lube Tube, available at many stores.
