Making Gas Powered Hydraulic Power Pack

I have many build projects planned, in which a hydraulic cylinder will work, to simplify the construction of such projects in the future, I decided to build a mobile hydraulic power unit, which will power all hydraulic machines. Gasoline hydraulic power unit is more designed for outdoor use and that's what I built it for, it can also work in well-ventilated rooms.
I used a gasoline engine with the power declared by the manufacturer of 7.5 hp (although I have doubts whether the engine really has such power) and I used a hydraulic pump with a flow of 6L.

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