Vacuum vibrates excessively, especially when using the motorized floor nozzle.

Safety first: Turn OFF the vacuum and remove the battery before working on the nozzle.

• Remove and clean brushroll: Take out the brushroll and remove all hair and threads, paying attention to even cleaning along its length.
• Inspect for straightness: Roll the brush on a flat surface. If it wobbles or appears bent, it is imbalanced and should be replaced.
• Check nozzle wheels: Spin the front and rear wheels of the nozzle. Remove any wrapped hair or debris that could cause vibration.
• Replace brushroll: If vibration persists after cleaning, install a new genuine iRobot brushroll.