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.

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.

Your string trimmer is an invaluable lawn care tool. Find out how often you need to change the strings on your weed whacker to keep it in good shape.