Check Fuel Quality

What happens here

As a final troubleshooting step, check the quality of the gasoline in the tank. Modern fuels, especially those containing ethanol, can degrade over time and become detrimental to small engines. Old or contaminated gas can cause engine issues, including stalling. Empty any old or suspicious fuel from the tank and replace it with fresh, high-quality gasoline. Consider using a fuel stabilizer if the pressure washer will be stored for extended periods.

Goal: Ensure fresh, clean fuel is used to prevent engine problems.