A friend has asked me to look at a mercruiser 350/bravo3 powered boats.
shortly after coming off the lift the overheat alarm goes off. Boat is
regularly maintained. Last time out with no problems he apparently flushed
it ( fresh water via muffs ) with the leg raised to its top position. I
suspect the impeller? Anyone with specific knowledge of this combination
have any suggestions? Anything else likely to be a problem?

thanks...