Packed with dirt!
Like anything else it gets packed with dirt, because the machines are packed with neglect. No bag, or a bursted bag is what lets this happen. If only people took care of the things that cost them $400. A Kenmore canister price is nothing to sneeze at!
Good for us, we get them for next to nothing. It is funny though I have only seen two of those machines with shot motors. Most of the time the cord reel is broken, or my ever favorite the center front wheel is broken off of the plastic housing. These are my favorite daily drivers. I prefer the whisperbelt model with the dirt sensor, and the adjustable wand. Nothing compares for cat litter cleanup on straight suction. I like the bare floor/wall tool!