Brushroll Assembly for Select BISSELL Upright Carpet Cleaners. To replace the brushrolls and belts, follow these instructions: Unplug machine and remove both tanks. While reclined, lay machine on its front. Remove belt cover. Use Phillips-head screwdriver to remove three screws. Use Phillips-head screwdriver to remove two screws. Then remove brush roll assembly by unhooking belt. If flat belt is broken, place a new belt around red pulley. Stretch belt toward back of machine and around metal shaft. If brushroll belts or brushroll assembly is broken, replace with new brushroll assembly. Reinstall brushroll assembly, making sure to loop belt over the shaft. Reinstall belt cover. Brushroll Assembly 1634215