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Jon GonzalezSep 12, 2025
Why Karcher Shark Pressure Washer unloader does not go into bypass or will cycle itself?
- JJennifer MaddenSep 12, 2025
If the unloader on your Karcher Shark Pressure Washer doesn't go into bypass or cycles itself, it could be because the spray gun or hose is leaking (check and repair all leaks), the check plunger didn't move or seal (remove the discharge port, clean and inspect the check plunger, and replace the O-ring if needed), or the actuator O-ring has failed (remove the actuator plunger assembly and inspect/replace the O-ring and back-up rings).

