How to Replace the Roller Brush

Steps

1. Remove the lower right side panel of the robot.
   
2. Remove the two screws holding the roller brush module on.
   
3. Pull out the roller brush module.
   
4. Take out the old roller brush and remove the fixed block.
   
5. Install the fixed block on the new roller brush.
   
6. Keep tension on the fixed block while the roller brush module is put back in.
   
7. Install back the two screws.
   
8. Reattach the side panel.