This is a Hoover brand we are talking about right? Dirt Devil is a seperate company. I could not find info on the 6606 (not even on google).
The Hoover model 6607 diagram shows me two belts in this machine (self-propelled). To replace the rear belt, you need to take the four screws out of the access plate, remove the plate, pull out the brush roller and remove the front belt from the center pulley. Then remove the rear belt from the motor spindle and pulley. Reassmeble in reverse fashion.
Help Around the House, September 2006
