Most of the 210 machines had a very basic bump feed head, grab the base and give a good tug, the base should come away with the spool, it is only held with two internal spring clips.
Husqvarna man
April 2010
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix grass trimmers.