Why is my Ryobi weed eater string not coming out and how can I fix it?

Your Ryobi weed eater string may not be coming out due to a tangled or jammed string, a worn-out spool, or a faulty trimmer head. To fix it, try removing the spool and untangling the string, replacing the spool if necessary, or checking and replacing the trimmer head if it's damaged.