I have a Stihl FS86 string trimmer. It's given me great service for many years, but now I can't get it to idle.
The carburetor has just been rebuilt and the machine will run with plenty of power but as soon as I release the trigger it will stall.
I tried to set the screw that adjusts the idle speed, but it still will not idle. It stalls as soon as the gas is released.
Is there another setting that I don't know about?