The gasoline drive motor is an otto engine one type of internal combustion chamber. Gasoline motorcycles are currently not only used to drive a wheel drive system, but this gasoline fuel motor is also used as a pump drive engine on water evaporation devices. The process of this research is carried out by analyzing fuel consumption on the yasuka titanium water pump by determining the size of the 250ml pertalite fuel and determining the engine speed from stationary rotation, intermediate rotation, and high rotation then measuring water pressure with maximum engine speed. The results of measurements of consumption of pertalite fuel (250 ml) using three variations of engine speed are stationary, medium and high. When 1400 rpm the engine can operate for 17 minutes and has not produced permeate water, at 2500 rpm the engine can operate for 14 minutes and has not produced permeate water, at 4500 rpm the engine can operate for 7 minutes and produce water permeate of 1,015 liters / hour . From the analysis of water pressure measurements with membranes and without membranes at 1400 rpm it produces 6.048 Nm of torque and 2.1 hp power, and is able to produce a water pressure production of 0.6 bar then at 2500 rpm it produces 10.8 Nm of torque and 3 power, 7 hp, and able to get the production of water pressure of 1 bar and at 3600 rpm produces 15.55 Nm of torque and 5.4 hp power, and is able to get a production of 2.4 bar water pressure, the results of measurements without membrane at 5500 rpm engine speed produce torque of 23.75 Nm and power of 8.25 hp and produce 3 bar water pressure.