How can I replace the trimmer line on my Ryobi cordless trimmer?

To replace the trimmer line on your Ryobi cordless trimmer, follow these steps:

1. Turn off the trimmer and disconnect the battery.
2. Remove the spool cover by pressing the tabs on the sides and pulling it off.
3. Take out the spool and remove any remaining old line.
4. Cut a new piece of trimmer line to the appropriate length.
5. Insert the line into the spool, following the arrows for the correct winding direction.
6. Reassemble the spool and spool cover, then reconnect the battery and turn on the trimmer.