Sorry to hear you're having problems with your outboard. Have you checked all the fuses? The fuel injectors might be receiving fuel but are they firing? Sometimes you can hear them "click" if you hold a screwdriver to your ear and against an injector. Out here in mechanic's land we use a little device called a "NOID" lite to verify that they are receiving power and are "pulsing".
Pulling a spark plug and seeing if it is wet or not is also a good indicator of what might be happening.
Since it is in warranty, you probably shouldn't mess around with it too much before taking it in to the dealer. If you crank the engine a lot trying to figure out what is taking place and the fuel injectors ARE delivering fuel to the cylinders, you can "wash" the cylinder walls down and start filling the crankcase with fuel, diluting the oil. Consequently, this COULD affect your warranty and the "attitude" of the dealer.
Good luck.