If you have one of product models listed in this belts' product name, there is a cover on the bottom that comes off with two twist holders. Also remove the metal around the roller brush by taking the screws out. Take one end of the brush out, slip the new belt around. As the belt goes through the narrow channel it does NOT go under the metal rod. The belt crosses itself on the side facing you above the metal rod. Lastly, slip belt over the small gear.