I got a artic cat 50 atv for my son from a friend. It had been setting for about six months and wont start. It is getting fuel and has a good spark but still wont start. When it was parked his kids left the fuel and ignition on and all the fuel ran out and the battery went dead. put new fuel in it and put a new battery on it. It was getting fuel but after it would not start i primed it and checked the spark but it will not do any thing but turn over. My 8 year old is harrasing me about it so please somebody help.

Thank You
inpatient son and agravated father