2007 TRX420TM/FM Fourtrax Rancher wont start

Cleaned plug, added Berrymans B12 to tank but still wont start. Says its fuel injected on back fender. I pulled the air filter off to see if I could prime it somehow. did so to give it a try and it ran till it burned up the prime.
Any idea what i can do before having to haul it to a dealer?