Re: overheating 260 hp mercruiser
Doing the job yourself is not especially difficult if you are mechanically included. Any owner service on an I/O or outboard should only be attempted with the aid of a service manual. Get one specific to your engine and outdrive. If you are unsure of your abilities, better leave it to the pro -- and be sure to tell him/her what you did. Don't say replace the impeller as it may be more involved than that.