Pressure Washer Repair Guides

These repair guides can help you get your pressure washer blasting away the dirt again. And Sears PartsDirect has more pressure washer repair help for you, including troubleshooting tips, explanations of what different pressure washer parts do and solutions for common symptoms. Tell us your model number for even more specific recommendations and replacement parts for fixing your pressure washer.

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How to Replace a Pressure Washer Unloader Valve

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The unloader valve recirculates water to protect the pump from damage. If the unloader valve is defective, replace it using the steps in this repair guide.

How to Install a Pressure Washer Check Valve Kit

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Air in the inlet water supply can damage the check valves. If the pump won’t build up pressure due to damaged check valves, follow these steps to replace the check valves.

How to Replace a Pressure Washer Pump

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The pump can be damaged by air in the inlet water supply or by chemicals that remain in the pump body after using the chemical injection system. Follow these steps to replace a damaged pump.

How to Install a Pressure Washer Chemical Injection Kit

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The chemical injection valve draws detergent into the pump. If it’s not drawing detergent, use a repair kit to replace the chemical injection valve.

How to Install a Pressure Washer O-Ring Kit

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O-rings seal fittings on the pressure washer pump. Damaged seals allow water to leak from the pump. Follow these steps to replace the O-rings in a leaking pressure washer pump.