To replace Junior’s main brush clutch, you’ll need a Phillips head screwdriver, the flat-head screwdriver included in Junior’s box, and a new main brush clutch.
Before starting any repair on Junior, turn his side power switch OFF and remove his dustbin.
Then, flip Junior over onto a flat surface and remove his main brush using the flat head screwdriver. Keep all removed screws and parts safely aside, as they may be needed for later reassembly.
Use a Phillips head screwdriver to remove the 7 screws on Junior’s underside that hold him together.
Junior’s cover is no longer secured, so hold the top and bottom together as you carefully flip him back onto his wheels. Grip Junior’s cover from the back and lift up to expose the mainboard.
Slide the power inlet down and tuck it somewhere safe to avoid compressing its wires.
To detach Junior’s cover completely, disconnect 4 circuit plugs.
Junior’s cover is now completely detached and can be set aside for the rest of the repair.
The main brush clutch is just beside the power switch. Use one hand to push the clutch up from underneath Junior, then uninstall its screw.
Lift Junior up, and two pieces will fall out: the clutch and the spring on top of it.
Place your new parts underneath Junior. Hold the spring on top of the clutch piece while putting them back in their space. Make sure the semi-circular gap faces the main brush motor, not the outside of Junior.
Push the clutch piece up from underneath Junior so you see the screw post protruding through. Hold the clutch there as you replace the small cushion and reinstall the screw.
Reattach all 4 circuit plugs connecting Junior’s cover to the mainboard.
Remember to slide the power inlet back into its space on Junior’s cover.
Align the cover’s edges precisely. Then, flip Junior over onto a flat surface.
Ensure that no wires are compressed in the main brush compartment or visible at the edges of the bumper. If so, take a step back and lift the cover to tuck the wires into the appropriate spaces inside Junior.
Once the wires are all safely tucked away and Junior’s cover is aligned properly, reinstall all 7 screws previously removed from Junior’s underside.
Install the main brush and dustbin before your next use and Junior is completely reassembled!