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7. Remove 1 x impeller screw and take off the impeller. This screw has an opposite thread and must be
unscrewed clockwise to undo the screw.
8. Visually check the impeller and impeller shaft for any hair or other debris, and clean if necessary. Hair or
debris in the impeller or impeller shaft may cause reduced suction or climbing performance.
9. Reassemble the robot by following these steps in reverse order.
3.3 Replacing Worn Brushes
1. Ensure the robot is turned off and the magnetic safety cap is inserted underneath the robot.
2. Turn the brush by hand until you can see the row of connection tabs.