Had two drain crews working monday. We had both k-60s in action when one took a dive while snaking a main line from the roof. Snaking fr. a 2" vent the 1500 and 1 1/4 cables wouldn't fit so we had to bite the bullet and add another unit to our arsenal. Got the new one to the jobsite, popped the drain loose and continued on down the road. Yesterday tore apart the downed unit and found the belt had just slipped off. We got it repaired in no time and now have a shiny new back up. Love these machines!