I have a Stihl FS 36 which I was given. I was using it today and tried to bump the knob to let out some string but none came out. I tried to disassemble the spool to remove what I presume is a tangled mess.
I have one slight problem, the bump knob is not budging. I tried for a while by hand and then I brought out a vice grip and I still couldn't get it to budge.
Does anyone have any ideas on how to screw off the bump knob?
Here is a forum post that has the same spool set up as mine in case anyone wonders exactly what it looks like.