The cold water high-pressure cleaner HD 9/20-4 S Plus is excellent for ergonomic and strain-free working. Thanks to the Kärcher EASY!Force Advanced gun, it can be comfortably operated without holding forces. The servo-control regulator allows for the adjustment of pressure and water volume. The Vibrasoft rotor nozzle reduces vibrations at the spray lance by up to 30 percent. Selected materials and the highest quality characterize the HD 9/20-4 S Plus. A robust wobble plate pump with a stainless steel piston and a brass cylinder head works alongside a slowly running 4-pole motor with water and air cooling. Integrated aluminum frame supports create a lightweight, robust chassis with the option for crane loading. For maximum mobility and a compact design, the motor and pump unit are installed vertically according to the Upright concept. The machine is further complemented by additional accessory storage options in the form of a kangaroo pocket and adjustable hooks.