From memory it goes something like this! Undo the white fan belt cover & remove the green belt (make note of how this is fitted) Undo the oval cover at the back next. Then take the circlip from the back bearing. Undo the large back cover next - you will need to disonnect the 6 mains input connectors to free the cover (make note of the colours of wire and order). Have the hoover ready to clean all of the white dust inside these covers and around the fan. With the back cover removed you will be able to put the new belt around the drum and the jockey roller. Good luck!
Don
March 2006