I bought one about 6 years ago. It lasted about 3 hours before quiting for good and being unreparable except maybe by Sears. That 3 hours took several months to accumilate since it didn't take long to trim my yard.
A friend bought 3 in 3 years because they kept breaking on him and it was about as cheap to buy a new one as to have Sears repair them. I didn't do that. I bought a Stihl and have been happy ever since. Matter of fact i have been happy with all my Stihl products. A Husquavarna tiller I have breaks as often as those Craftsman weedeaters, but it is too expensive to throw away.