Honda GX390 Petrol Pressure Washer 13hp (3000 PSI) is a powerful and reliable petrol power washer with Honda. Honda GX390 13HP engine and slow spinning interpump plunger pump. The benefit of having a reduction gearbox between the engine and pump, slows the pump speed down to 1450 rpm extending the pump life. Recommended for all prolonged usages. The Honda GX390 13hp Petrol Power Washer is ideal for heavy-duty / commercial use industrial engine with comet to pump.