How do you put the string in the weed waker?

To put the string in a weed wacker, first, turn off the machine and unplug it for safety. Remove the spool from the trimmer head by pressing the tabs or unscrewing it, depending on the model. Then, wind the new string around the spool in the direction indicated, leaving enough length to feed through the eyelets. Finally, reattach the spool to the trimmer head, and pull the string to ensure it's seated properly.