Unlock the Right Part
for Your Repair
Find the exact part you need
Enter your model number to see parts that fit your machine.
Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeChoose Product
Identify Problem
03
Find Solutions
HomeRepair HelpCub Cadet RepairCub Cadet Pressure washer leaking water Repair
Cub Cadet Pressure washer leaking water
Is your Cub Cadet pressure washer leaking water? The pump assembly is the most likely cause. A worn pump, damaged pump seals, or failing pump o-rings can cause a pressure washer leaking from the pump, especially when the machine is several years old or used often. Replace the pump assembly when it is heavily worn; on a newer pressure washer that sees limited use, rebuilding the pump or replacing the pump seals may be enough. The next possibility is the pump itself, which may require a rebuild or complete replacement. A thermal release valve, also called a thermal relief valve, can also make the pressure washer appear to leak during normal operation. If the engine runs while you are not spraying water, heat builds inside the pump and the valve opens to discharge hot water. Do not leave the washer running without spraying. Check the pump, seals, and thermal release valve to determine whether the leak is expected or indicates a failed part. Enter your Cub Cadet pressure washer model number to find the exact replacement pump, pump seals, or thermal release valve for your specific machine.
01 - Cub Cadet 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.
Enter model number to search for the required part specific to your product
Top Solution
02 - Cub Cadet Pump
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.
Top Solution
03 - Cub Cadet Thermal Release Valve
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.
Highly Likely
Frequently Asked Questions
Why is my Cub Cadet pressure washer leaking water from the bottom?
Is it normal for a pressure washer thermal release valve to leak water?
How do I fix a Cub Cadet pressure washer pump leaking water?
What model number do I need to find the correct Cub Cadet pressure washer leak repair part?
What safety steps should I take before repairing a leaking pressure washer?
Shop by Cub Cadet appliance Parts
Shop by Popular Cub Cadet Models
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com