A burning smell when in use - Dyson DC07 Animal Bagless Upright Cyclonic Vacuum

Martinsivyer:

Turn the machine upside-down and see if you can turn the beater/brush bar with your hand. You should see the brush turning and feel the resistance from the motor. The brush/beater bar may be binding, and what you are smelling is the motor shaft spinning against the rubber belt. You can remove the base plate and check the brush/beater bar with the belt disconnected. If the brush/beater bar is difficult to turn, you need to remove the brush/beater bar and clean the bearings at each end, Remove any threads that are wound around the beater bar ends so that the bearings roll easily and smoothly. Check to see that your machine is not set too low for the surface that you are bacuuming. While you have the belt disconnected, check thi inside surface to see if the motor shaft has been spinning against the belt, you'll see the damage to the inside circumfrence of the belt.