You can replace the line or purchase a spool that's preloaded with string. Before you replace the line on your Ryobi string trimmer, it's important to understand a few key things so you can do it ...

Ryobi also made a 40V string trimmer but the 18V is more than enough for me ... Once the cap is off, all you need to do is to align the arrows on the spool, insert a length of new string into the hole ...