I am not a mechanic!!!! Since I didn't have any jobs this afternoon so I decided to start workin on my weed whacker I ran over and bent the shaft on. It took me all afternoon to get the old shaft out of it so that I could order a new one. It is now apart and in about twenty pieces, when the new shaft comes in we will see if I can put it all back together. Amazing that a small piece of metal 1/4" diam and bout 2' long is $40. I am in the wrong business!!!!