Howdy yall, I just recently bought a Yamaha Bear Tracker 250 for $98! It was completely flooded and the guy I purchased the bike off of tore apart the carburetor and stripped damn near all of the screws, most of wich I was able to replace except for the air fule mixture screw because it is sunken into the carb its self. so I went through the carb myself and cleaned and inspected it and all loks good on it so I put it on the bike and fire it up but it will only run at full choke and if I give it some throttle then it bogs down and dies. But wait there's more! the floats are moving the needle properly but for some reason when I shut off the bike it just keeps pouring fuel out of the carb. and it likes to backfire through the carb itself.UPDATE: The next day (Today) I go out to work on the bike and notice that I have fuel sitting in the airbox. If this car keeps giving me more and more issues I am seriously considering getting a replacement carb that is a different model. Any and all help is highly appreciated, I would like to get this carb back in running condition but if I cant please let me know how to properly measure a carburetor so I can begin looking for a different model carb that will still fit on the bike. sorry for the long post but there is obviously alot going on
-Backwoods Mechanic

 

You can always just buy something like this https://www.amazon.com/CARBURETOR-YA...250+carburetor
Its a lot less expensive than buying the Oem and finding a good used one might take a while.

 

I have been looking around but the cheapest that I have found of the original carbs were $100 and the butterfly was stuck closed. Thanks though.