need help diagnosing

4 months 3 weeks ago #3138 by aflemi01

I have a Troy Bilt gas power washer model #020413, 2500 max PSI, 2.3 max GPM machine. The engine starts just fine, when I try to squeeze the trigger for the power washer wand, the engine just shuts down (water connected and turned on prior to engine start). Then the start cord is really hard to pull. Turn off water, squeeze trigger, release pressure, turn water back on, squeeze trigger, water comes out, start engine, engine runs fine, squeeze trigger, engine shuts off.

Is it the unloader valve, is it the pump, is it something else, is the machine just shot and I need to buy a new one? Thanks for any help.

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4 months 3 weeks ago #3139 by MTR-Admin

This definitely sounds like the unloader valve.
Here is a video on how to clean it.



Also, make sure that your wand and gun are working. When the unit is turned off and the water hose is turned on, does depressing the trigger cause a flow of water out of the nozzle?

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