Unit vibrates excessively or feels unstable when brushes are running.

Safety first: Unplug the cleaner.

• Inspect brush roll: Remove and check for warping or missing bristles. Replace if out of round.
• Clean evenly: Remove all debris from the brush to avoid imbalance.
• Check bearings and mounts: Ensure brush end caps and mounts are tight.
• Inspect wheels: Replace any cracked or wobbling wheels or casters.