My Hisun 6.5 runs great especially after putting a new carb on it but I cannot get it to idle down. I can push the throttle on the carb back with a screwdriver and it idles down perfect. I have tried a couple of things but didn't help. I have seen the guy that says to stretch the little spring running from the governor to the throttle but I'm pretty sure that's not the answer.. Could it be that the governor arm under the gas tank is a bit out of whack? I see that it is adjustable. Just thought I would get some expert opinions before I fiddle with it.