The electric 12-inch Weed Eater trimmer is a handy yard tool for performing light duty trimming around the house. Eventually you will need to change the line on the trimmer. Weed Eater does have a pre-wound spool available, however it is just as quick and less expensive to replace the trimmer line yourself. Weed Eater recommends using their brand of .065 trimmer line as a replacement. You can purchase trimmer line at home improvement centers.
Disconnect the Weed Eater from any power source.
Pull the tap button off the center of the trimmer line spool. The tap button is the portion of the trimmer you tap on the ground to feed more line when trimming. You can now pull the trimmer line spool out of the spool housing with your fingers.
Clean inside the spool housing to remove grass clippings and dirt. Remove any remaining string that may be on the trimmer line spool.
Cut 30-feet of .065 trimmer line from the stock replacement line with a pair of regular household scissors or a utility knife. Insert one end of the line a half inch into the small hole on the trimmer line spool.
Wind the trimmer line evenly and tightly around the trimmer spool in the direction indicated by the arrow on the bottom of the spool. Place the last 6 inches of trimmer line into one of the holding notches on the spool.
Insert the spool into the spool housing, feeding the end of the line through the eyelet on the housing. Push the spool in until the spool snaps into place. Place the tap button back over the spool until it snaps into position. Tug on the end of the trimmer line to release the line from the holding notch.