there's a guy named Steve Hurd that owned Gresham KTM (Oregon) that does a modification to the carb' needle on the mid-eighties big bore huskys That makes them run very very clean. I would get his number and perform this mod'. He did both of my big 85/86 430 and 500's. I consider it to be a "must do" if you want to get them to run cleanly and make the numbers they are capable of.
there's a guy named Steve Hurd that owned Gresham KTM (Oregon) that does a modification to the carb' needle on the mid-eighties big bore huskys That makes them run very very clean. I would get his number and perform this mod'. He did both of my big 85/86 430 and 500's. I consider it to be a "must do" if you want to get them to run cleanly and make the numbers they are capable of.