The 2 roller brushes do not work unless you push the vacuum clean. It should have a belt that automatically pulls the rollers and makes them turn. I have taken every screw out to the vacuum cleaner to try & find the belt. I don't want to go any futher unless I know for sure that it does work with a belt that automatically pulls the rollers. Please help me with finding a manual or tell me how this vacuum cleaner works..Thank you for your time in the matter.