Kirby sentria

remove the cloth bag from the bottom it twists counter clockwise, un clip the bag from the top remove the head piece, turn the belt lifter clockwise and release the lever to remove the head, take off the head, in your attachments there should be a screen that covers the impeller that the belt rides on it goes on like the brush head, put your hose onto the bag port by turning clockwise. there it is it will not work without the screen cover. thanks Rene