a problem you will encounter if you dont drain the oil is oil running
from the gallery on the stbd side that connects the upper and lower
cavities. if you have a drive saver bottle in the engine bay oil will
continue to drip for quite some time. what is a face seal?


wrote in message ...
Is it really necessary to drain the lower unit when replacing the
impeller on the Alpha 1 generation 2? How critical is setting the face
seal and can that be eye-balled satisfactorly?
Thanks,
HJJ