Directions To Convert VRO to Gas

VRO fuel pumps or "variable ratio oiling" pumps were used in the 1980s in many models of boats. The VRO pumps mix gas and oil together within the pump, as opposed to standard models that take the two solutions premixed. Older models can be changed over by simply disabling a portion of the VRO fuel pump. It's a short and simple process that most boat owners should feel comfortable doing on their own. However, you'll need to premix the gas and oil if you continue using the old fuel pump.

Things You'll Need

  • Shears
  • Rubber stopper
  • Screwdriver
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Instructions

    • 1

      Find the VRO fuel pump oil line that connects to the engine. Cut it using a pair of work shears. Detach it from the engine connection.

    • 2

      Plug the oil line from the engine to the fuel pump. Use a rubber stopper of the appropriate size. Make sure it's air-tight so that no air is let into the fuel line.

    • 3

      Follow the electrical wires from the back of the VRO to the power supply. Disconnect and remove them.

    • 4

      Locate the two wires from the oil tank to the engine. Disconnect both of them. Remove the oil tank from the boat.

    • 5

      Premix your fuel to the proper standards needed for your engine. You may also buy a premixed gasoline and oil solution. Many VRO engines from this era run on a 50:1 gas-to-oil mixture.