To adjust the pressure, turn the unloader adjustment knob (black plastic knob located on the pump) clockwise to increase pressure and counterclockwise to decrease it. It does not come with a built-in pressure gauge.
Simpson Powershot Cold Water Professional Gas Pressure Washer — 4000 PSI, 3.5 GPM, Honda GX270 Engine, AAA Triplex Pump, Model# PS60869

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- HONDA® GX270 engine is equipped with a low oil shutdown feature
- AAA® triplex pump has an integrated unloader with a thermal relief valve
- Monster, 50 ft. dual braided high-pressure hose is kink and abrasion-resistant with a non-marring polyurethane outer jacket with QC fittings
- Welded steel frame construction with a powder-coated finish for durability and corrosion resistance
- 5 Quick connect nozzle tips, 0°, 15°, 25°, 40° and soap nozzle to use for a variety of cleaning applications
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