Why My Roomba Brushes Not Spinning? 3 Ways to Fix in 2023

Last updated on September 22nd, 2023

The brushes are an important part of a vacuum cleaner. They are used to collect dust and debris from the floors, carpets, and even the corners of the walls. But sometimes, these brushes do not spin properly, which affects the cleaning capability of the vacuum. In this article, we will discuss the issues causing the brush to clog and the ways to fix it.

Why my Roomba brushes are not spinning?

One of the major issues due to which brushes get jammed is the accumulation of tangled hairs, loose carpet fiber, or any other threads on it. The secondary reasons are poor lubrication or a faulty brush or motor. To fix it, you must regularly clean the brush and motor compartment and lubricate the motor shaft.

Ways to fix Roomba brushes not spinning

To fix the jammed Roomba brushes, you must:

  • Clean visible hairs and carpet fibers entangled with the brushes
  • Open the brush compartment (both main and side sections) and look for any other blockage
  • Clean and lubricate the gearbox and motor compartment

Let’s look at them in detail.

Fixing the Roomba’s main brush

Roomba brushes not spinning due to clogged main brush
A clogged main brush of Roomba

The main brushes in a Roomba play a vital role in the cleaning process by agitating surfaces, lifting dirt and debris, and collecting dust. They are specifically designed to scrub carpets and remove pet hair. However, at times, they can get stuck due to the accumulation of dirt, carpet rugs, or tangled hair underneath the brushes. To resolve this, follow the steps below:

Clean the brushes

Cleaning main Brush of a Roomba
Cleaning the main Brush of a Roomba

To clean the main brush, first, turn OFF your Roomba and flip it upside down. To remove and clean the brushes follow these steps:

  • Locate and remove the brush guard by pushing the green button toward the brushes.
  • Inspect the brushes for debris, tangled hair, loose carpet fibers, etc.
  • Gently remove any visible debris from the brushes using your hands or a cleaning tool.
  • Also, check the ends of the brushes for accumulated hair and clean them.
  • Use a damp cloth or cleaning tool to wipe the brush compartment and remove any obstructions.

Once the brushes are cleaned, you will have to reinstall them. Follow these steps to reinstall them.

  • Reinstall the brushes one at a time, ensuring they fit securely and rotate freely.
  • For the second brush, use a screwdriver to remove the screw, clean it underneath, and then secure it back in place.
  • Ensure both brushes are properly aligned and fitted before closing the brush guard.
  • Snap the brush guard back into place by lining up the tabs with the corresponding slots.

Note: Clean the brushes regularly to prevent excessive dirt build-up and maintain optimal performance.

Test the brushes

Turn on the Roomba and observe if the main brushes are spinning freely without any obstructions. If they still encounter issues, consider contacting Roomba customer support for further assistance.

Fixing Roomba’s side brush

Roomba brushes not spinning due to jammed side brush
Jammed side brush of a Roomba

If the side brush of a Roomba is not spinning then it must be due to the entangled hairs, or loose fibers obstructing its circular movement. So, you will have to manually remove it from the Roomba and clean it. You can follow the steps below to know how to clean it.   

Clean clogged brush

clogged side brush due to tangled hairs and threads
Clogged side brush due to tangled hairs and threads

To clean a clogged side brush, follow these steps:

  • Turn off the Roomba.
  • Remove the side brush module.
  • Remove debris and tangled hair.
  • Clean the module and bristles.
  • Reattach the side brush module.
  • Test the side brush.

Removing dirt from the gearbox and motor compartment

Side brush module and gearbox
Side brush module and gearbox

If you have already followed the above steps, and it’s still not rotating then it must be possible that dirt and debris can be possibly inside the brush module into the gearbox and motor compartment to clean inside the module.

  • Unscrew the Back side of the Roomba.
  • Remove the side brush module.
  • Clean the gearbox and motor compartment.
  • Reattach the side brush module.
  • Plug in and turn on the Roomba to check functionality.

Lubricate the brush

After implementing the above steps, it is expected that the problem will be resolved. However, if the issue persists or the side brush still exhibits uneven spinning, lubricating the gearbox of the side brush module can often provide a solution. To lubricate the gearbox, follow the steps mentioned below.

  • Remove the side brush module carefully.
  • Inspect and clean the gears for any dirt or debris.
  • Apply a small amount of gear lubricant to the gears.
  • Reinstall the side brush module.
  • Test the side brush to ensure it spins properly.

Replace the Brush

Replacing the Roomba's brush
Replacing the Roomba’s brush

If, despite cleaning and lubricating, the side brush fails to spin, it may be necessary to replace it. In many cases, iHome provides an additional replacement brush with most Roomba models, or you can order one directly from the company. It’s important to consider that excessive wear and tear or physical damage to the brush can also necessitate its replacement.


The brushes on the Roomba can get jammed due to hair and carpet fiber entanglement. Sometimes this issue can be resolved just by cleaning the brushes. In some cases, it is because of the jammed gearbox section, for which you will need to clean and lubricate that section. To keep your brushes in proper working condition, you must regularly clean the brushes and other open parts of your Roomba.


How often should you replace a Roomba side brush?

To maintain your Roomba’s efficiency, clean the side brush every other week and replace it every 6 to 12 months. Regular maintenance and part replacement can extend the lifespan of your vacuum without the need to buy a new one.

How do I know when to replace my brushes?

You can determine when to replace your brush based on a few indicators. Firstly, if the brush bristles are excessively worn or frayed, it’s a sign that a replacement is needed. Additionally, if the brush is not rotating properly, it could indicate that it’s time for a new brush.

Can Roomba work without a side brush?

Yes, the Roomba can operate without a side brush, although its cleaning performance may be somewhat compromised, particularly in terms of edge and corner cleaning.

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Mark Thompson

Hi I am Mark, the founder of Smart Home Bulls. Having spent 5 years immersed in the intricacies of smart home gadgets at a leading tech company, I decided to chart my own course side by side along with the job. Enter Smart Home Bulls – the result of my desire to simplify the smart living experience.

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