Tempestv
ArboristSite Operative
I have a 260 that was ported and muffler moded by the previous owner. It's been a great saw for a number of years, but just recently it started running very fast at idle. I tried to tune the carb, but it seems impossible to tune properly. It either won't idle at all, or its running way way to fast. I backed the idle screw back until it wasn't engaging the throttle, and it didn't make a difference. I'm thinking some sort of air leak. What would be the beat way to go about diagnosing such a problem?