How do I properly restring a Ryobi weed eater?

To properly restring a Ryobi weed eater, first remove the spool from the trimmer head. Cut a length of new trimmer line, usually around 10 feet. Insert one end of the line into the hole in the spool and wind it in the direction indicated on the spool until it is full. Secure the line in the notches on the spool and reassemble the spool onto the trimmer head. Cut the line to the desired length and you're ready to trim.