Wen PW3400 User Manual (English)

Questions and Answers:

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Alexis ColeAug 11, 2025
How to fix a Wen Pressure Washer when the engine will not start?
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  Maureen DavisAug 11, 2025
  If your Wen Pressure Washer's engine isn't starting, several factors could be the cause. First, make sure the engine switch is set to “ON” and the fuel valve is also turned to “ON”. Check if the choke is closed. Ensure that there is gasoline in the engine, and if the gasoline is old or contaminated, replace it. A dirty or broken spark plug can also prevent the engine from starting, so clean or replace it as needed. Also, ensure the pressure washer is on a level surface, and that the oil level is sufficient, adding or replacing oil if necessary.
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Victoria PhelpsAug 19, 2025
What to do if my Wen PW3400 pump fails to produce pressure or the pressure is inconsistent?
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  Mrs. Brandi MartinezAug 19, 2025
  If the pump on your Wen Pressure Washer isn't producing pressure or the pressure is inconsistent, start by checking the water supply for any restrictions, inspecting the garden hose for leaks and ensuring it's at least 3/4” in diameter. Make sure the water source is fully open. Clean the nozzle if it's clogged. Inspect the spray gun for leaks, tightening the connection or replacing the gun if necessary. Squeeze the trigger handle to remove any air from the line. Also, clean the inlet hose screen if it's clogged and ensure the water supply isn't over 100° F, using a cool water supply instead. If the pump is faulty, contact customer service at 1-847- 429-9263 for assistance.
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Ray StephensAug 27, 2025
Why is the water pressure weak on my Wen PW3400?
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  henry67Aug 27, 2025
  If you're experiencing weak water pressure with your Wen Pressure Washer, there are a few things to check. First, inspect the garden hose for any restrictions or leaks and ensure you're using a hose with a minimum diameter of 3/4”. Make sure the water source is fully open. Also, ensure you are using the high pressure nozzle.
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Shane CruzSep 2, 2025
What to do if detergent and spray do not mix in my Wen Pressure Washer?
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  melissa89Sep 2, 2025
  If the detergent and spray aren't mixing in your Wen Pressure Washer, ensure that the detergent hose is properly connected and fully submerged in the detergent. Also, make sure you are using the black soap nozzle.