How to Restring a String Trimmer Changing weed eater string requires very few tools and doesn’t take long if you follow the steps below.

The trimmer string wraps around a spool that sits inside the rotating head. There are two methods to refill it—replace the whole spool, or rethread a new length of string.

Nothing is as frustrating, however, when your weed eater string breaks and needs replacing, leaving many wondering what to do and how to change it.

Next, place the spool back into your weed eater, taking one string out of its notch at a time (or releasing each with your fingers) and feeding it through a hole.

Plus, if you have a trimmer with a proprietary spool you need to hope the company never goes out of business. Or, you can simply refill your string spool with this handy tool.