Can't get the head off a Homelite ST-145 String Trimmer.

[Vintshave]

Trying to replace the string on my trimmer. Watched some videos but it seems like the end knob won't unscrew even with a good deal of force. Am I missing something?

 

[StarTech]

Most likely you going to need to cut the plastic knob off the bolt as it is seized. I have seen this on several of these over the years where they over tighten themselves and seize. I personally got an old ST285 that did it eve nwith a new knob then I started using anti-seize compound on it which seems to cure the problem.

BTW that know is already worn out and allowing moisture into the area of the bolt and threads.

 

[Vintshave]

Do these loosen with a left turn or right? Just checking

 

[upupandaway]

I recall it is LH thread.

 

[StarTech]

Black knobs are normal right hand threaded and red knobs are left hand threaded. As I said just plain stick sometimes even when new ones are installed and this one is worn out and probably has lost the seal over the hex head screw (bolt).