GX620 carb

Good morning all,



I have a Honda GX 620 on a welding machine and the carb a very clean for a 15 year old machine.



I there a chart somewhere that tell if the newer carbs will work on this engine?

Finding a rebuild kit is proving difficult too.

This engine has 300 hours on it and started running rough. I assumed fuel issues. Carb is spotless ... The fuel filter is a poor design too.



Any help is greatly appreciated.



Thanks,



Tom