Coming in to the marina last night one of my new Mercury 225 cut off at cruising speed of 30mph. I restarted the engine and it ran for about 5 minutes and shut off. After that would not re-start. I had to go in on one engine. This morning the engine would start for about three minutes than shut off. Does not seem to be overheating.<br /><br />The motors are new with about 10 hrs. I would appreciate any ideas of what may be the problem. (Of course I will send back to the dealer to hve checked out)<br /><br />Thanks