Power Knob, for D4 (gray black) Upright Brittle plastic and repeated filter

Brittle plastic and repeated filter changes are the common causes

It installs directly in place of the original

causing an unsteady roll and air escaping the motor exhaust

dust can slip from the compartment and the canister looks worn

Tip: replace worn wheels in pairs for even travel

Power Knob, for D4 (gray black) Upright Brittle plastic and repeated filterThis genuine SEBO Power Knob in gray black fits the SEBO D Series D4 canister. It is the knob you turn to power the machine on and off, seating over the switch mechanism and giving a firm, comfortable grip for the control. A power knob that has cracked, stripped, or worn smooth no longer turns the switch cleanly, so the D4 becomes awkward to start and the mechanism below can be left exposed. Fitting a fresh knob restores a positive turn and dependable