So I have a Stihl MS 201 TC. When I got it the handle had been replaced in the wires rerun. Everything is put together correctly but nothing happens when you pull the trigger, but when you pull the choke back it acts like the throttle. I checked the little plastic ring that goes between the carburetor in the intake and it's fine no damage. I'm at a loss I have no testing equipment whatsoever. Does anybody have any ideas?