For this repair, you will need a Phillips head screwdriver and a replacement main brush motor.
First, flip bObi's power switch OFF.
Next, remove bObi's front wheel to access one of the screws holding her together. Turn bObi's front wheel towards her bumper and, using a screwdriver for leverage, grip the wheel firmly and pull it up.
Remove the screw located beneath bObi's wheel.
Detach bObi's dustbin and remove the 2 screws on either side of it.
Remove the 2 triangular corner pieces held down by these screws.
Pull the main brush compartment forward to expose the red fastener behind bObi's main brushes. Remove the 2 smaller screws holding the red fastener in place.
Lift bObi's brush compartment up and out. To detach her brush compartment completely, unplug it from bObi by pulling at the circuit junction.
You will find bObi's main brush motor on the bottom of her brush compartment. Remove the 4 screws which secure it.
Remove the black stabilizer attached to the motor’s circuit plug end before pulling the whole piece out.
Slide the old brush motor out and place the new one in its stead. Slide the long metal end in first.
Next, place the stabilizer you removed previously onto the new motor so it lines up with the screw posts.
Reinstall all 4 screws securing the brush motor.
Reattach bObi's brush compartment.
Line up the red brush fastener on bObi and replace its 2 smaller screws.
Lay the 2 corner pieces down.
Reinstall the 2 screws on either side of bObi's dustbin.
Reinstall the screw located beneath bObi's front wheel.
Lastly, replace bObi's front wheel by turning it towards her bumper and pressing down.
Your repair is now complete!