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And how does it compare to other.
Check for a Broken Brush.It’s possible that the brush roll itself is damaged, which can stop it from turning correctly.

This is much less common than a broken belt, but is something to check for if you’re sure that the belt is working correctly.. Again, switch off and unplug the vacuum, before turning it over so you can see the brush.Take a look for any signs of cracks or other damage to the brush.You can also spin it manually to inspect the brush from different angles..

If the brush is damaged, then you’ll need to replace it.This is a simple task on most vacuums, although you’ll need to find the correct brush for your make and model.. 4.

Replace a Faulty Brush Roll Motor.
Once you’ve ruled out a physical obstruction, tangle, or a broken drive belt, the next most likely problem is a faulty brush roll motor..Apply to the carpet, working from the outside-in, so it doesn’t spread the stain further.
Give the carpet a good soaking but don’t saturate it, then leave it to work for at least five minutes.. Blot the area to remove the vinegar solution, then rinse with clean water to remove any vinegar residue.. Blot a final time to remove excess moisture.. Leave the carpet to air dry.Opening windows and using fans will speed this up..
If the smell is still lingering, move on to the next method..Use a Steam Cleaner to Remove Odours.