If the vacuum is not cleaning as well as it had before or the brush roll has stopped turning, you may have to change the belt. To change the belt, please refer to your models user guide for installation instructions.
With bagless vacuums, having clean filters is critical to maintain cleaning performance. Over time, filters can become dirty and eventually clog. A dirty or worn filter can diminish the cleaning performance of your vacuum, so it is important to regularly clean and monitor them.