Have a D110 I bought back in 2012. I run the hell out of it. Change the drive belt and blades when I trash them and it just keeps going. Have hit rocks and limbs, have caught wire in the blades I had to cut out several times and it just keeps going. Figured I would have trashed all the pulleys and spendals by now but they are still good to go. Had to change one drive pulley and that is all.