Home › Forum › Ask A Member › 9.9/15 impeller housing tricks? › Re: 9.9/15 impeller housing tricks?
March 11, 2015 at 3:48 pm
#11817
I don’t know if this applies to the 9.9/15, but it does to other OMC’s There is a hole drilled at an angle between the water tube/grommet area down into the cup that surrounds the drive shaft. The purpose is to keep the cup filled with water and prevent air from going down past the drive shaft, into the pump. You probably have to remove the grommet to poke something through the hole.