how to change a brush belt

Canada
October 18, 2006 5:32pm CST
I tried to use my proheat bissell this am to clean my burlap rugs. As soon as I commenced pushing the proheat forward the brush sounded like it was jumping on the carpet. When their was no pressure on brushes they spun, however is I don't know if the cogs on the belt are worn. I need to receive instructions on how to change the brush belt. I found the pump belt. Help
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