How do I properly install the Ryobi weed wacker line?

To properly install the Ryobi weed wacker line, first, turn off the weed wacker and disconnect the spark plug. Then, remove the spool cover and take out the old line. Cut a new line to the correct length and insert it into the spool, following the arrows for the correct winding direction. Finally, reassemble the spool cover and reconnect the spark plug before using the weed wacker.