Kärcher HD 6/16-4 M / MX User Manual (English)

Questions and Answers:

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Andrew KellyJul 31, 2025
How to fix Kärcher Pressure Washer not building up pressure?
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  hernandezpatrickJul 31, 2025
  If your Kärcher Pressure Washer isn't building up pressure, try these steps: First, set the nozzle to "High pressure" and clean or replace the nozzle. Then, vent the appliance to remove any air within the system. Check the water supply level against the technical data and clean the sieve in the water connection. Also, examine all inlet pipes to the pump, and check the pressure and suction valves for leaks, replacing them if needed. Finally, inspect, adjust, or replace the overflow valve.
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fingramAug 4, 2025
What to do if Kärcher HD 6/16-4 M / MX Pressure Washer turns on and off when hand spray gun is closed?
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  Allison JonesAug 4, 2025
  If your Kärcher Pressure Washer turns on and off while the hand spray gun is closed, the issue might stem from the system's tightness or pressure regulation. Check the trigger gun and the O-rings on the high-pressure hose for leaks, and replace them if necessary. Additionally, inspect, adjust, or replace the overflow valve, and check or replace the pressure retaining valve, as well as the pressure switch or control piston.
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Sarah MartinAug 9, 2025
Why Kärcher Pressure Washer does not switch off when the hand-spray gun is closed?
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  Jeffery SmithAug 9, 2025
  If your Kärcher Pressure Washer doesn't switch off when the hand-spray gun is closed, it could be due to a pressure issue. Check, adjust, or replace the overflow valve. Also, inspect and replace the pressure retaining valve and the pressure switch. Finally, check or replace the pressure switch or control piston.
J
Joshua TorresAug 13, 2025
Why is my Kärcher HD 6/16-4 M / MX Pressure Washer not running?
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  David GarrettAug 13, 2025
  Your Kärcher Pressure Washer might not be running due to several reasons. First, check the connection cable for any damages. Also, ensure that the supply voltage is correct. If the engine is overheated, turn the device switch to "0" and let it cool off for at least 5 minutes. Finally, inspect and, if necessary, replace the appliance switch and the pressure switch.
R
ryanmichaelAug 17, 2025
How to fix Kärcher HD 6/16-4 M / MX Pressure Washer when detergent is not being sucked in?
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  Jon ChandlerAug 17, 2025
  If the detergent isn't being sucked into your Kärcher Pressure Washer, ensure the nozzle is set to "CHEM". Then, check and clean the detergent suction hose with its filter. Open or check and clean the detergent dosing valve. Also, inspect, clean, or replace the detergent check valve and the nozzle for detergent. Finally, replace the detergent injector if necessary.
D
Derek SmithAug 22, 2025
What causes Kärcher Pressure Washer pump to vibrate?
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  Christopher Jackson MDAug 22, 2025
  If your Kärcher Pressure Washer pump is vibrating, check the suction pipes for water and detergent, making sure they are leak-proof. Close the dosing valve for detergent to operate the machine without detergent. Also, vent the appliance.
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Stephanie KnightAug 26, 2025
How to repair a leaky Kärcher HD 6/16-4 M / MX Pressure Washer pump?
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  Meghan NelsonAug 26, 2025
  If your Kärcher Pressure Washer pump is leaky, and you notice water leaking between the cylinder head and the piston casing, check and replace the high-pressure and low-pressure seals. If there are oil leaks between the cylinder head and the piston casing, replace the oil seals. Also, check and replace the piston if needed.

Kärcher HD 6/16-4 M / MX Specifications

General

Flow Rate	240-560 l/h
Weight	52.9 kg
Dimensions (L x W x H)	467 x 407 x 1010 mm
Power Type	Electric
Max. inlet temperature	60 °C
Voltage	400 V
Frequency	50 Hz
Pressure	160 bar