Hey thanks I'm new here and i just picked up a 2000 scrambler 400 a few days ago and this is my first atv so im pretty much a newb here. So here's the issue's here I'm having, When I start the quad it definitely idles high to begin with the guy I got the quad from says it was rebuilt under a year ago and was bored .40 over so I was kinda wondering how the carb should be set. The other issue I'm having which I also think is a carb issue at least I hope but please let me know what you think, is that once the quad runs for about 15 mins or so it starts to bog out and die and wont start about for another 20 or 30 mins that cycle keep s repeating runs for 15mins and dies for like 30 mins. So any thoughts at what it could be. I know its getting gas because I took the carb off once after it happened immediately and the bottom was completely full of gas. I thought maybe it's flooding but please tell me your thoughts on what to do and check thanks.