Most Frequent Causes for Vacuum cleaner belt keeps breaking
Cause 1
Brushroll
If too much hair, string, or lint is caught in the brushroll, the brushroll can get stuck. If the brushroll is stuck, it will put too much strain on the belt and may cause the belt to break. Remove the brushroll and clean out any debris from the bearings. After replacing the brushroll, make sure that it turns freely.
'''Most Frequent Causes for Vacuum cleaner brush not spinning
Cause 1'''
Belt
Inspect the belt to see if it is broken, stretched out, or out of place. If the vacuum cleaner belt is broken or stretched out, replace it.
Cause 2
Drive Belt
Inspect the belt to see if it is broken, stretched out, or out of place. If the drive belt is broken or stretched out, replace it.
Cause 3
Cogged Belt
Inspect the belt to see if it is broken, stretched out, or out of place. If the cogged belt is broken or stretched out, replace it.