drain hole on lower unit boss

[ace1]

Got a question. I installed a new water pump impeller on my engine and cleaned up the cavity where the shift rod goes down to the lower unit. This cavity has a drain hole coming out just above & on the left hand side of the rounded gearcase boss (think thats what its called--im new to boat motors) My question is while I had the muffs on the engine to test my water pump I noticed a stream of water coming out this hole. Is it supposed to do that? By the way it a 1988 15hp johnson

 

[F_R]

Re: drain hole on lower unit boss

Everybody gets anxious and upset over drain holes. Don't. Of course water comes out them. That's why they are there.

 

[Mas]

Re: drain hole on lower unit boss

The holes allow water to drain when the motor is not in use so the castings do not crack due to ice expansion.

MAS