How much fuel/gas consumption per hour for your pressure washer?

Hi
I checked the specs for the (Honda GX390 motor) in DEWALT’s 4,200 PSI 4 GPM Gas Pressure Washer, and it says consumption is 230g/PS-hr, which at 11.7 HP is 0.96 gallons of fuel / hour.

What are your figures?
Thanks

I don’t know the size of the tank, but I usually get around 2.5-3 hours on a tank at full throttle.

What is the machine?

690 is a gallon an hour unless it’s doing curbs or surface cleaner. Then about .75 gallons an hour

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I have the 5.6@2500 pressure pro. Gx390. I mostly do housewashing, so I’m guessing running it at lower pressure probably reduces the demand placed on the motor.

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What is 690?

OK, this is helpful.

Honda gx690. 21 to 24 horse, depending on how you squint and who is selling it

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OK, thanks