Hey, this is Jeremy with Crucial Vacuum,
There are 3 potential reasons as to why your Dyson DC43 roller brush is not working:
1) The brush bar may be blocked by debris that was picked up by the vacuum. To remove the blockage, switch your vacuum 'OFF' and unplug before proceeding. Then, lay the vacuum down and try to remove anything that is lodged in the roller brush. If you still cannot clear the obstruction, you may need to remove the base plate to gain better access to the bar.
2) The roller brush may be set in a position that is too low for the type of surface that you are working on. Vacuums have different recommended heights when working on carpets and hardwoods. Try switching the brush "on" or "off" based on what type of surface you are working on.
3) If the vacuum cleaner brush is not spinning the belt might be broken, stretched out too much, or might have fallen off. Check the belt and replace if needed.
You can purchase replacement parts for Dyson direct from Crucial Vacuum with free shipping and an exclusive 10% coupon for Fixya.com readers, use code: FIXYA10
http://www.crucialvacuum.com/dyson.html
I hope this was helpful. If you would like further assistance, please feel free to give us a call at 877.750.9239. We have helpful and friendly customer care representatives on the line ready to assist you.
Jeremy Lerner
Crucial Vacuum Customer Care
http://www.crucialvacuum.com
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