How do you replace a belt on Hoover model UH269-930 vacuum?

To replace the belt on a Hoover model UH269-930 vacuum, first unplug the vacuum and remove the bottom plate by unscrewing the screws. Next, take out the old belt from the motor shaft and brush roller. Place the new belt around the motor shaft, then loop it over the brush roller before reassembling the bottom plate and securing it with screws. Finally, plug the vacuum back in and test it to ensure proper operation.