Recently I discovered there was a burning smell whenever I would vacuum the floor. I started trouble shooting the basics such as changing the bag, cleaning the filters and making sure there was nothing caught in the rollers. I even took apart the bottom and gave it a good cleaning making sure to get out all the dust that was inside. Still the vacuum continued to make a burning smell.
Some suggested that it could be the motor overheating but I never run the vacuum for a long period of time and it would begin to make the burning smell and even start to smoke after just 1 minute of use. I did some more research and came to the conclusion that is needed a new belt for the roller on the bottom.
I looked on the vacuum and in the manual to find the item number of the belt and went searching for it online. They were pretty cheap, just a few dollars, and available at hardware stores as well as Amazon and eBay. I found the best price from a reliable seller on eBay so I ordered it to be delivered.
About a week later, the belt arrived. I disassembled the bottom of the vacuum to get to the belt. While it was apart, I made sure everything was cleaned out inside. The old belt looked ok, but I decided to switch in the new belt to see if it would fix the problem. The new belt looked to be a lot smaller, but it was the correct item number and I was able to stretch it to fit the rollers.
Next, I reassembled the bottom of the vacuum and gave it a try. Thankfully it ran perfectly with no more burning smell! Overall it was a pretty easy and inexpensive fix and sure beat buying a whole new vacuum cleaner. So if your vacuum is making a burning smell, chances are it needs a new belt for the roller on the bottom. Make sure to order the right belt and align it evenly so it runs smoothly and does not rub against the sides. Hope this article helps! Good luck!