I have a self propelled windtunnel that I have had for 6 years, have not had a problem with the self propelled or any other part for that matter. However, if your vacumn is less than a year old it is still under warranty. You should be able to find a vacumn repair shop that handles Hoover warranty work in your area.
However, I recently bought a Hoover Savvy upright that is less than 6 months old and I am now having a problem with its self-propeller.
I hope this is not a future problem with Hoover because I used them for years and have always liked the Hoover models. Good Luck.
bkordick, November 2007