When your Ryobi pressure washer is leaking water, the pump assembly is the most likely source of the problem. A worn pump assembly can leak from the pump or the bottom of the pressure washer, especially when the machine is several years old and used regularly. Replacing the complete pump assembly is usually the best option for an older machine. If the pump is newer or the pressure washer has light seasonal use, you may be able to rebuild the pump by replacing its pump seals. A damaged pump, pump head, manifold, or pump o-rings can also cause a Ryobi pressure washer leaking water from inside the unit. Another possibility is the thermal release valve. This valve may open during normal operation if the pressure washer is left running without spraying, allowing overheated water to escape from the pump. Turn off the machine when it is not in use and inspect the leak after it cools. Disconnect power and water before servicing. Enter your model number to find the exact replacement pump assembly, pump, seals, or thermal release valve for your specific Ryobi pressure washer.
01 - Ryobi Pressure Washer Pump Assembly
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.
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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.
The leak could be due to the normal operation of the thermal release valve. The thermal release valve allows hot water to exit the pressure washer if the water temperature becomes excessively high. If the pressure washer is left running while it is not spraying water, the water in the pump will begin to heat up. When the water temperature rises above the acceptable limit, the thermal release valve opens to allow the hot water to exit the pressure washer.