Hold the spool still and remove the cap from the spool following the directional arrow on the trimmer cap.
Remove the line guide ring and the spool from the Weed Eater.
Cut 25 feet of 0.065-inch trimmer string with a pair of scissors. Place one end of the string into the center cavity in the top of the spool and wrap the string around the spool counterclockwise. Leave 4 to 6 inches of string unwound.
Place the new spool or the rewound spool onto the trimmer and thread the end of the trimmer string through the line guide.
Place the line guide onto the spool and secure both to the Weed Eater with the trimmer cap.