Usually that the belt has broken, turn it over and see if the brush rods turns freely.
There are two belts, one that conects the two rods together, one that drives them. if they both still move together, then it is likely the big belt to the motor. If one moves freely and the other one harder, then likely the belt between the two.
Your manual tells you how to replace them. Can also be found at bissel.com.
Answers & Comments
Usually that the belt has broken, turn it over and see if the brush rods turns freely.
There are two belts, one that conects the two rods together, one that drives them. if they both still move together, then it is likely the big belt to the motor. If one moves freely and the other one harder, then likely the belt between the two.
Your manual tells you how to replace them. Can also be found at bissel.com.
Peace