ROBOROCK main brush gearbox for S7 Black robot vacuum, 9.01.0794

ROBOROCK 9.01.0794 — main brush gearbox for S7 Black robot vacuum; black, weighs 0.1 kg. The gearbox is what turns the main brush. When the drive wears, the brush stalls or binds, the robot reports a brush error, and a rattle starts coming from underneath. Before replacing anything, pull the brush and cut the hair wound around the bearings — that is the number one cause and it needs no parts at all.