Really easy. You refer to the drawing you made when you took it apart.
You did do that didn't you?
Come on. You KNEW you didn't have a manual and you STILL took it apart without any notes?
90 seconds with Google found this. There is a link to the manual at the top right of the page.
http://www.hoover.com/shop/searchresults.aspx?itemid=221395
Allan
March 2010