Screw Cap Weed Eaters
Unscrew the cap that is located on the end of the weed eater head.Pull off the guide ring that is sitting over the spool, and pull out the spool.Remove the old string from the spool. Open the new package of weed eater string and cut off a 25-foot length with a utility knife.Place one end of the string into the opening of the spool. Insert the string into the spool and leave a 4-inch to 6-inch length of string hanging from the center.Set the spool back into the head of the weed eater and set the guide ring back over the spool.Screw the cap back on the head of the weed eater.
Fixed-Line Weed Eaters
Push the old string through each of the two holes in the weed eater's head, toward the center of the head, and remove the old string.Insert one end of the new fixed-line string into one of the holes, pushing it through from the inside of the weed eater head, going outward. Push the string out to a length of 4 to 6 inches.Insert the other end of the string into the other hole on the head of the weed eater, again pushing it through from the inside, going outward. Push the string out to a length of 4 to 6 inches.
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