How do I string a Ryobi weed wacker?

To string a Ryobi weed wacker, first, turn off the engine and disconnect the spark plug. Then, remove the spool cover and take out the old string. Cut a new piece of string to the appropriate 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 starting the weed wacker.