2009 250 SHO, 2012 powerhead, about 240 hrs on powerhead. Was running around 5000 rpms. Running fine. Heard a thump ( like metal) & it shuts down. Starts back up and idles fine. put it in gear, idled couple 100 feet. So tried to give it a little gas, OK. Tried a little more ( maybe 1500 rpm). Same thing, shut down. Not far from ramp so just used trolling motor. While sitting there tried to restart. Turned over like the started was dragging or a almost dead battery. So loaded up, came home. Hour or two later, turned it over & it makes one hellacous noise that would scare the hell out of you just walking by. Sounds almost like a starter or flywheel are going to pieces. Will take the cowl off tomorrow. I took it off at the ramp after I loaded up but couldn't see anything wrong. Taking it to the doctor next week. Doesn't sound good.