I have a 2007 mercury 3.5 HP 4 stroke that stops pumping water after about 10 - 15 minutes of use. I have changed the impeller and still have the same issue. Has anyone else had this problem?
The water intake is clean and the the pump works fine for another 10 - 15 minutes after I shut down and allow it to cool for 20 minutes.
Any help ? suggestions will be greatly appreciated.

Bill