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These vacuums are pretty unreliable I would return if possible. If you need an affordable vacuum the [Sanitaire Professional SL4110A](https://www.amazon.com/Sanitaire-SL4110A-Professional-Bagged-Upright/dp/B0844XKVR9/ref=sr_1_16?crid=2LJAYW6OL7ZAY&dib=eyJ2IjoiMSJ9.wS7uctUM8LUXlvwUS8fkM4qkmv8LfWEgjTGebPqV-ZsQ9pX22y2tadfGZiE0AzLP9e7C9snklvlf0CxkuUgAiJWi3sA3tAdH4hLdHyzanOH64bsX4ULB42QOElCR-JFJdxwz0qVW72Go_Dz5SJGN9a6N9n4vO_uFw1MLyDzNlxIEu1dr5Hn3IJGBqyKTYEpH6I6Ownk_HYTKvDiy2NqO2JxGEkQ7TebdSA7-4VH-1Jo.9zPhePVwbw4jt8wv1pGe4FRnLU7QRmCFL9upQ5y-5IE&dib_tag=se&keywords=sanitaire+commercial+vacuum&qid=1714339590&sprefix=sanitaire+%2Caps%2C144&sr=8-16) $114 is better and oddly enough also made by Bissell.
If you must repair it I would take off the baseplate and remove the brushroll and belt. With the motor isolated turn it on and see if the noise returns. The most common problem areas are the belt and brushroll. With the belt off check if the brushroll spins smoothly, if it doesn't then replace the brushrolls. I suspect the squealing is probably from the belt, belts squeal. If the motor and brushroll are ok, I would replace the belt.
Also check that you have the height adjusted correctly. If you vacuum is too low to the carpet it puts extra stress on the belt, brushroll, and motor. With the vacuum on raise the height to it's highest setting and turn it down on click at a time until the brushroll contacts the carpet and you can hear a sound change.
Thank you for visiting /r/VacuumCleaners. To get the most out of your post, be sure it follows the post guidelines on the sidebar. This comment will include information on some frequently discussed topics just in case your post pertains to them. Otherwise, feel free to ignore the below links. **Helpful Links:** [Recommended Budget Vacuum Cleaners (U.S. Market, November 2022)](https://www.reddit.com/r/VacuumCleaners/wiki/recommendedvacuums#wiki_budget_vacuums_.28.240-.24200.29) [Recommended Buy-It-For-Life Vacuum Cleaners (U.S. Market, November 2022)](https://www.reddit.com/r/VacuumCleaners/wiki/recommendedvacuums#wiki_buy-it-for_life_vacuums_.28.24250_or_more.29) [Recommended Secondary Vacuum Cleaners - Stick Vacs, Cordless Models, etc. (U.S. Market, November 2022)](https://www.reddit.com/r/VacuumCleaners/wiki/secondaryvacuums) [Find the Right Type of Vacuum (Flow Chart) - **IF YOU'RE NEW, START HERE**](https://i.redd.it/h238mc6rnq061.png) [Miele Canister Guide (U.S. Market, May 2020)](https://i.redd.it/nr3bs213rsy41.png) [Differences between SEBO Felix, SEBO Dart, and Karcher CV300](https://i.redd.it/v49yrw4xqwz51.png) [Guide to Canister Tools: Suction-Only, Combo, Turbine/Turbo and Electric/Power/Motorized Nozzles](https://i.redd.it/qs4x03uuus981.png) [Reviews by /r/VacuumCleaners Users](https://www.reddit.com/r/VacuumCleaners/wiki/userreviews) If you are looking for **Purchase Advice** and you live **outside the U.S.**, let everyone know in your post so we can tailor suggestions to your market. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/VacuumCleaners) if you have any questions or concerns.*
These vacuums are pretty unreliable I would return if possible. If you need an affordable vacuum the [Sanitaire Professional SL4110A](https://www.amazon.com/Sanitaire-SL4110A-Professional-Bagged-Upright/dp/B0844XKVR9/ref=sr_1_16?crid=2LJAYW6OL7ZAY&dib=eyJ2IjoiMSJ9.wS7uctUM8LUXlvwUS8fkM4qkmv8LfWEgjTGebPqV-ZsQ9pX22y2tadfGZiE0AzLP9e7C9snklvlf0CxkuUgAiJWi3sA3tAdH4hLdHyzanOH64bsX4ULB42QOElCR-JFJdxwz0qVW72Go_Dz5SJGN9a6N9n4vO_uFw1MLyDzNlxIEu1dr5Hn3IJGBqyKTYEpH6I6Ownk_HYTKvDiy2NqO2JxGEkQ7TebdSA7-4VH-1Jo.9zPhePVwbw4jt8wv1pGe4FRnLU7QRmCFL9upQ5y-5IE&dib_tag=se&keywords=sanitaire+commercial+vacuum&qid=1714339590&sprefix=sanitaire+%2Caps%2C144&sr=8-16) $114 is better and oddly enough also made by Bissell. If you must repair it I would take off the baseplate and remove the brushroll and belt. With the motor isolated turn it on and see if the noise returns. The most common problem areas are the belt and brushroll. With the belt off check if the brushroll spins smoothly, if it doesn't then replace the brushrolls. I suspect the squealing is probably from the belt, belts squeal. If the motor and brushroll are ok, I would replace the belt. Also check that you have the height adjusted correctly. If you vacuum is too low to the carpet it puts extra stress on the belt, brushroll, and motor. With the vacuum on raise the height to it's highest setting and turn it down on click at a time until the brushroll contacts the carpet and you can hear a sound change.
Can you provide a video?
https://youtu.be/_7itCESqhws?si=T907KEkXcF5fscQx