Most electric fuel pumps operate on 12volts D.C., so 1.7 volts won't get the job done.
Are you sure that you are not checking the fuel gauge terminals instead of an electric fuel pump? Most if not all fuel gauges use low voltage to reduce a spark hazard inside of the fuel tank. Disconnect those wires from the tank and see if the fuel gauge stops working properly. this should tell you what the wires go to.
I am not familiar with your specific unit, but most gas motors that had carburetors on them used a mechanical fuel pump mounted onto the engine. They started needing electric fuel pumps when they went to fuel injection.
You may have a failed mechanical pump. If so, some good news. They usually cost less to replace than electric ones. Also, if the supply line that feeds the pump has any place that air can get into, the pump will suck air and not pump fuel. Check the fuel filter connections and the line going to the pump, (if it indeed outside of the tank).
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