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Karcher HD 9/21 G High Pressure Washer


Self-sufficient in its use and completely mobile: thanks to a built-in Honda petrol engine, you can use the Karcher HD 9/21 G High Pressure Washer from the HD Gasoline Advanced range independently of power connections.


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The ergonomic frame concept of the Karcher HD 9/21 G High Pressure Washer petrol-powered cold water high-pressure cleaner from the HD Gasoline Advanced range offers maximum mobility. Protected by its robust basic frame, the machine can withstand use in adverse conditions. The Honda petrol engine can reliably deliver electricity where no connection is available. And if there is also no water connection available, the machine is able to suction water directly from bodies of water and convert it into a working pressure of 210 bar. A thermostat valve and water filter protect the pump against damage, even in recirculation mode. With the EASY!Force high-pressure gun, which makes use of the recoil force of the high-pressure jet to reduce the holding force for the operator to zero, as well as the EASY!Lock quick-release fasteners, which make set-up and dismantling five times faster than with conventional screw connections,the machine is very convenient to use. The HD 9/21 G also impresses with its well-designed operating concept, storage possibilities for accessory parts, puncture-proof wheels and a variety of expansion options.


Technical data

Flow rate (l/h) 200 – 850
Working pressure (bar/MPa) 10 – up to 210 / 1 – up to 21
Motor type GX 340/petrol
Engine manufacturer Honda
Weight (kg) 72,5
Dimensions (L × W × H) (mm) 866 x 722 x 1146


  • Spray gun, EASY!Force Advanced
  • High-pressure hose, 15 m
  • Spray lance, 1050 mm
  • Power nozzle
  • Infinitely variable pressure and water flow regulation
  • Motor, Petrol

Features & Benefits

Maximum independence

  • Fitted with reliable Honda or Yanmar engines for use without an external power supply. Can suck up water – e.g. from lakes or ponds – and use it for cleaning.

Optimum ease of use

  • The ergonomic frame concept makes transport on uneven ground easier. Storage possibilities for all accessory parts directly on the machine. Puncture-proof wheels guarantee permanently high mobility. High pressure washer HD 9/21 G: Highly versatile

Highly versatile

  • Optional cage frame with eyelets for crane loading reliably protects the machine. Hose reel attachment kit for shorter set-up & finishing-off times available as an optional extra. Portable version with robust tubular frame specially designed for painters and plasterers (HD 728 B).

For the toughest jobs

  • Robust basic frame for daily use in tough conditions.
  • Large water filter to protect the pump.
  • Thermostat valve to protect the pump from overheating in recirculation mode.

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