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Karcher Pressure washers

Official Karcher pressure washer parts

Karcher builds rugged pressure washers that are ideal for any cleaning project. Karcher offers gas or electric models, so you can choose the type of pressure washer you need. Karcher pressure washers are manufactured with dependable components to last for years.

When your Karcher pressure washer isn't working right, depend on Sears PartsDirect to have the repair parts you need to get your pressure washer fixed.

Common Karcher pressure washer parts that need replacing

  • Pump. The pump is connected to the engine crank shaft. The engine crank shaft spins the pressure washer pump to create the water pressure for the spray nozzle.
  • Spray gun. The spray gun has a trigger and trigger lock to control the application of water onto the cleaning surface.
  • Thermal relief valve. The thermal relief valve protects the pump from overheating. If the spray wand is idle for more than 5 minutes while the pump is running, the pressurized water heats up quickly. If the water gets too hot, the thermal relief valve opens to prevent damage to the pump. The thermal relief valve closes once the water temperature cools.
  • Unloader valve. The unloader valve opens to relieve water pressure and recirculate water through the pump when the spray wand isn’t in use and the pressure washer is running. Recirculating water helps prevent the pump from overheating when the spray wand isn’t discharging water.
  • Check valve kit. The check valve kit replaces the pump check valves, which ensure the proper flow of water through the pump and manifold so the water going to the nozzle is properly pressurized.

What to do when water sprays out of the pressure relief valve on your Karcher pressure washer

If the pressure washer runs for more than 5 minutes when the spray wand isn’t in use, the water in the pump often overheats, causing the thermal relief valve to open and discharge hot water onto the ground. When the thermal relief valve opens, cool water enters the pump and cools the system. Once the pump has cooled, the thermal relief valve closes and the pressure washer operates normally. If the pressure relief valve purges constantly and doesn’t close properly, replace it.

Sears PartsDirect is your best source for Karcher pressure washer parts

Sears PartsDirect has hundreds of genuine Karcher pressure washer parts in stock. We make it easy for you to find the replacement parts you need to fix any pressure washer problem. You can find the parts you need using entering your model number into the search bar and viewing the parts diagrams. Select the replacement parts you need from the parts listings.

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