If your Generac pressure washer has no pressure, the pump assembly is the most likely cause. A worn or damaged pump may leave the pressure washer not building pressure, even though the engine runs normally. If the pump is more than a few years old and the machine is used often, replacing the complete pump assembly is usually the best repair. On a newer pump or a pressure washer used only occasionally, the pump may be rebuildable, and replacing the pump seals can restore pressure without replacing the entire assembly. A damaged pump, worn pump seals, or internal pump wear can also cause low pressure, weak pressure, or a pressure washer pump not building pressure. Before ordering, inspect the pump for signs of wear and confirm that water is reaching the inlet, but focus your diagnosis on the pump and its seals first. Enter your Generac pressure washer model number to find the exact replacement pump assembly, pump, or pump seal kit for your specific machine. Repair Clinic carries the parts and repair guidance you need to correct a Generac pressure washer with no water pressure.
01 - Generac Pressure Washer Pump Assembly
You may need to rebuild or replace the pump. If the pump is more than a few years old, and you use the pressure washer fairly often, replace the pump. If the pump is relatively new, and you don’t use the pressure washer often, either rebuild the pump or replace the pump seals.
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You may need to rebuild or replace the pump assembly. If the pump is more than a few years old, and you use the pressure washer fairly often, replace the pump assembly. If the pump is relatively new, and you don’t use the pressure washer often, either rebuild the pump assembly or replace the pump seals.