Hers is what I have, the quad runs fine when it starts up, idles fine, when it warms up runs great for about 5 min. Then when you go to run it it wants to stall out. I have to feather it. Not a big deal, but if I run it at half to three quaters for about 75 yrds runs strong, let of it try and go and thats it wants to stall or runs just enough to stay a live. I took the carb off, I think I cleaned it pretty good. How ever the diafram on the bottom of the bowl had a tair in it. I cant find that thing any where on line, found everything else but that. Also cards run any where from 70-150. I would buy one if need be. That all being said what did I do wrong, or what should I check. Im sure putting that diafram back in did not help. I will try and post a pic with this but just incase i cant. Its a 250 water cooled. Any thoughts or prayers would be great. Thanks

 

New carb on E-bay is about 20$, just make sure to get the same one and some spare o rings never hurt....I tore mine during install.

 

Well after looking at it for a while. I found the petcock was closed some. Turned it all the way on and now it runs great. Kinda silly.

 

I don't think that silly at all. I work in a shop where people come in with a siezed chainsaw and all it actually is,is the brake is on. some go away redfaced, others just laugh, happy that all it was.