What should I do if the pressure washer is not delivering water?

Check that there is a water supply connected to the inlet. Clean the water inlet filter to remove any blockages. Clean the nozzle in case it is blocked. Straighten out the hose to remove any kinks or blockages. If the pump or hoses are frozen, wait for them to thaw. If these steps do not resolve the issue, contact the Snow Joe® + Sun Joe® customer service center at 1-866-SNOWJOE (1-866-766-9563).

From the official Sun Joe Washing Machine manual, page 14

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