I have a Stihl FS 45 string trimmer with a bump knob I cannot remove. I have used opposing pipe wrenches and it will not twist off. What has happened and better yet what do I have to do to get it off?
Stihl FS45 string trimmer bump knob - cannot remove
- Thread starter dukerocks
- Start date
Fish
Lawn Pro
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- Aug 2, 2013
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The cap has the plastic knob, a big nut inside, and a snap ring that keeps it inside...
If it won't unscrew, then you re screwed...... And have to put up with the silly comments of those that work on said,"KNOBS".........
Sux, don't it?????
If it won't unscrew, then you re screwed...... And have to put up with the silly comments of those that work on said,"KNOBS".........
Sux, don't it?????
I did get the plastic cut away from the nut on the bump knob. I am using a penitrating oil to soak around the nut over nite. My additional problem is when I tried the opposing pipe wrenches, I head something snap, and believe it is where the drive cable connects to the motor. I'll have to take the motor housing off to check that out because when I turn the nut, the cable just wants to spin freely. Maybe there is a broken wooddruff key, set screw in there???? I have got to stop the drive cable from spinning to unwrench the nut. Any suggestions? Bob