I think there's a sticky thread with common problems so be sure to search if your in a hurry. Always make sure your holding in the clutch when start the bike. Just trust me. after you get the bike home post again with a pic and we can tell you some stuff to check out like the old drain hose from the airbox (if it has one?) and the common sticky kickstand kill switch.
Happy buying. (dude will never tell you how sad he is he had that kid!)
