Where can I find upright vacuum cleaner parts (not accessories)?

Question:Specifically for a Hoover U5753-900 WindTunnel Bagless Upright Vacuum. A link to a store would be appreciated. Thank you.

Answers:
Try Sears.com
Go to the parts section, type in your model and go from there.
You can see a diagram of the parts as well as a parts list.
At the repair center we repair this model almost daily!