I HAVE A STIHL FS 56 RC TRIMMER THAT WILL IDLE FOR ABOUT 10-15 SECONDS THEN DIE. IT WILL RUN FINE AS LONG AS YOU GIVE IT THROTTLE. I PUT ON A NEW CARB, FUEL LINES AND A FILTER BUT STILL WONT IDLE LONG..ANY SUGGESTIONS?
Find which hose goes into the tank to the fuel filter. Disconnect this hose from the carb and slowly prime the carb until fuel comes out the hose. When it comes out, stop priming and let it sit. Does it drop or stay? drop = leaking grommets or hose or gas cap.
There are other causes but I would say are much more unlikely. Try this first.
Plus on that note removin the spark arrestor just make it sound meaner !
You should hear my fs45. The muffler is basically a resonator now, it's hollow. Sounds like a 150cc dirt bike