Kärcher K 520 - User Manual

Questions and Answers

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Mrs. Amanda Reyes DDSAug 14, 2025
Why won't my Kärcher Pressure Washer motor start?
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  Lindsay BrooksAug 14, 2025
  The motor may not start because the On/Off switch is in the “OFF” (O) position. Turn the switch to the “ON” (I) position. Also, check if the power cord is properly plugged in. Another reason could be an inadequate or damaged extension cord. Replace it with a 25 ft. 12/2 gauge cord or a 50 ft. 10/2 gauge cord. Try a different outlet, as the current one may not supply adequate power. Finally, reset the breaker (power supply) or GFCI, as the Ground Fault Circuit Interrupter (GFCI) may have tripped.
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Kimberly FloresAug 20, 2025
Why does my Kärcher Pressure Washer have low pressure?
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  zburkeAug 20, 2025
  Your Kärcher Pressure Washer might not reach high pressure due to several reasons. The diameter of your garden hose could be too small; replace it with a 3/4 inch garden hose. The water supply might be restricted, so check the garden hose for kinks, leaks, and blockages. Ensure there's enough inlet water supply by opening the water source fully. The water inlet filter could be clogged; remove the filter and rinse it in warm water. Make sure the spray wand is in the high-pressure position. If a wash brush is attached, switch to the vario spray wand.
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collinsstevenAug 25, 2025
Why does the output pressure of my Kärcher K 520 Pressure Washer vary?
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  Nicole Powell DDSAug 25, 2025
  If the output pressure of your Kärcher Pressure Washer varies, it could be due to several factors. Ensure there is enough inlet water supply by turning the water on full force and checking the garden hose for kinks, leaks, or blockages. The pump might be sucking air; check that hoses and fittings are airtight and purge the pump by squeezing the trigger gun until a steady flow of water emerges through the nozzle. The water inlet filter could be clogged; remove the filter and rinse it in warm water. The discharge nozzle might be obstructed; blow out or remove debris with a fine needle. Lastly, the gun, hose, or spray wand could be calcified; run distilled vinegar through the detergent suction tube.
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benjamin77Aug 27, 2025
Why is my Kärcher K 520 Pressure Washer pump noisy?
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  vallenAug 27, 2025
  A noisy pump in your Kärcher Pressure Washer is often caused by the pump sucking air. Check that all hoses and fittings are airtight. Turn off the machine and purge the pump by squeezing the trigger gun until a steady flow of water emerges through the nozzle.
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Michael DillonAug 30, 2025
What to do if my Kärcher K 520 Pressure Washer garden hose connection leaks?
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  richarddaughertyAug 30, 2025
  If the garden hose connection on your Kärcher Pressure Washer leaks, first check for loose fittings and tighten them. If the leak persists, inspect the rubber washer; if it's missing or worn, insert a new one.
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Thomas GibsonSep 3, 2025
Why is my Kärcher K 520 Pressure Washer spray wand leaking?
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  wrightstephenSep 3, 2025
  If your Kärcher Pressure Washer spray wand or spray wand extension is leaking, ensure the spray wand is properly attached by inserting it into the wand extension, pushing it in, and turning it clockwise to lock it in place. Also, check that the spray wand extension is correctly attached to the trigger gun by pressing it in against the spring tension and twisting it into the lock position, then turning the spray wand extension collar clockwise until tight. If the o-ring is broken, call Kärcher customer service hotline and order an o-ring.
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matthew88Sep 6, 2025
Why is my Kärcher K 520 leaking water from the pump?
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  uharrisSep 6, 2025
  If water leaks from the pump of your Kärcher Pressure Washer, ensure that all fittings are tight. If the leak continues, the water seals may be damaged or worn and you should call a service center.
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andrewfernandezSep 9, 2025
Why is my Kärcher Pressure Washer dripping oil?
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  qlopezSep 9, 2025
  If your Kärcher Pressure Washer is dripping oil, the oil seals are likely damaged or worn, and you should call a service center.
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John BellNov 16, 2025
What to do if my Kärcher K 520 has no detergent?
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  Mary McclainNov 16, 2025
  If your Kärcher Pressure Washer is not dispensing detergent, first check that the detergent suction tube is properly connected to the machine. If it is connected, the detergent may be too thick; dilute it, or for best results, use Kärcher detergent. Also, the filter on the detergent suction tube might be clogged, so run warm water through it to remove any debris. If the detergent suction tube is damaged or clogged, remove the obstruction or replace the tube. Ensure the spray wand is not in the high-pressure position; turn the spray wand tip to the low-pressure position. Check that the discharge nozzle isn't obstructed; blow out any debris with a fine needle. Make sure the detergent container is not empty and add more detergent if needed. Finally, ensure the detergent filter valve is not at...