Robot vacuum’s side brush flies off during cleaning or frequently comes loose.

Safety first: Turn OFF the robot before handling the side brush.

Step-by-step:

• Inspect brush hub: Check the inner hole of the side brush for rounding or cracks. Replace the side brush if worn.
• Check screw and shaft: Ensure the retaining screw is present and not stripped. Inspect the motor shaft for wear or deformation.
• Use correct parts: Only use side brushes specified for your Eufy model; incompatible hubs may not seat properly.
• Replace motor (if needed): If the shaft is damaged, replace the side brush motor assembly.

When to stop: If brushes still come off with correct parts and tight screws, the motor shaft is likely defective.