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David BurnsAug 25, 2025
Why is my Kärcher Pressure Washer unit not reaching high pressure?
- MMichael WeberAug 25, 2025
If your Kärcher Pressure Washer isn't reaching high pressure, consider these possible causes. The diameter of your garden hose might be too small; replace it with a 5/8 inch or larger garden hose. The water supply could be restricted; check the garden hose for kinks, leaks, and blockages. Ensure you have enough inlet water supply by turning the water on full force and again checking for hose issues. The water inlet filter might be clogged; remove it and rinse it out in warm water. Lastly, make sure you've attached the high-pressure nozzle instead of the black detergent nozzle.
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