husqvarna chainsaw 3120 xp starts, idles, runs good when cold after running 20-30 minutes it is hard to start.?
also it will not stationary after running 20-30 minutes.i clean or put a new plug in it every day an also fully air filter, is this a carb adjustment or could there be somthing else?
If you're changing or cleaning a publicity every day, and this happens when hot, but runs fine when cold, it sounds like a severly plugged air weed out or a stuck choke. Possibly a lot of build up in the carb, but if it idles okay cold, probably not.
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