It takes about 20 feet of string I shut the string in the garage door and then unwind it to the big garage door that is about 20 feet. Then cut it.
on the string receiver that are 2 small holes put each end through one of the holes going toward the the area where the string will be wound. There is a marking that shows which way to wind the string. Wind both strands that direction after getting it centered in other word both strings the same length. Wind it till done there are slots that you can put the sting into to hold them marked .080" put the holder into the trimmer and the string through the holes in the trimmer and pull the string out of the .080 notches and screw the cap back on to hold everything in place. Cut the string to equal shorter lengths and you are ready to go. I would reccomend to get a high quality tough string that will last longer than the cheap stuff. I use a square green platinum type string that lasts a long time hth
redrac
July 2010