# Troubleshooting the Comet Pump on a Pressure Washer
Comet pump pressure washers generally are used to wash large surfaces or flush out lines. While most residential pressure washers are hand-held units, a pressure washer with a Comet pump is a large machine with an engine and gas tank. Only adults familiar with operating large-scale, fuel-based machinery with pressure should operate or troubleshoot the pressure washer.
Things You'll Need
- Clean cloths
Instructions
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1
Check the air inlet on the pressure washer for obstructions if the pump does not charge or function. Make sure the pressure washer is connected to a working electrical outlet.
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2
Clean the air inlet valve or replace it if the valve is worn out. Replacement valves are available through the pressure washer manufacturer or at many garden supply or hardware stores.
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3
Position the regulation valve lever back to zero.
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4
Increase the pressure washer motor rate to between 350 and 550 pounds per square inch, or psi.
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1
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