Does somebody know there is a jap carb that fit on a yamoto 200 atv?
I have problems with the carb now ,after i clean it out the engine runs almost fine (some problems above midrange)
But after a couple hours riding the same problems again.

 

I had a similar problem with a carb on my sons ATV. It was the needle seat (rubber) deteroriating due to me using carb cleaner when cleaning out the carb. It looked fine, but would start leaking shortly after removing and cleaning.