They don't make them like they used to.
I was mulching leaves with my 1 1/2 year old 48" Husky and I heard a loud noise and smelled the belt burning.
The mandrel housing on one of the blades broke.
I inspected the area and could not find anything that I could have hit and I have never hit anything tougher than a hickory nut with it!
I parked it and drug out my old early 90's Murray and finished the job. 2 pulls and it was ready to go!
New belt $72.95, New mandrel housing $26.89, my old Murray, Priceless!