Because there are too many variables involved, there is no specification on the run time published for this water pump, by the manufacturer
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Sorry, but Honda does not publish run-time specs for this model. I checked with a model engineer, and he tells me it is because there are too many variables that can effect the run time. Amount of total lift for both the suction and discharge hoses, elevation of the pump (all gasoline engines make less power at higher altitudes), type of strainer, etc. All these things will effect the fuel consumption. I can tell you a 4-stroke motor is generally efficient, and the tanks size is suitable, providing a reasonable fuel supply for this application. -Robert@Honda
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