1989 110HP Johnson - How to disablbe VRO?

[jgranax]

Hello All,

Kind of a newbie here. I want to disable my VRO and start the 50:1 mix. I have some directions, but if anyone out there has done it for this year motor, please help me out. Also, what is the best way to mix the fuel and oil afterwards? I have a 25 gallon metal tank. So I will take 1/2 gallon of oil and mix it with 5 gallons of fuel in another tank, then pour the mixture into the 25 gallon tank, them add the additonal 20 gallons of fuel?

Sound reasonable?

Thanks all....

JG

 

[HighTrim]

Re: 1989 110HP Johnson - How to disablbe VRO?

Welcome to iboats. The following will be of interest to you.

(VRO Pump Conversion To Straight Fuel Pump)
(J. Reeves)

You can convert the VRO pump into a straight fuel pump, eliminating the oil tank and VRO pump warning system, but retain the overheat warning setup by doing the following:

1 - Cut and plug the oil line at the engine so that the oil side of the VRO pump will not draw air into its system. Trace the wires from the back of the VRO to its rubber plug (electrical plug) and disconnect it.

2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.

3 - Mix the 50/1 oil in the proper amount with whatever quantity fuel you have. Disconnect the fuel line at the engine. Pump the fuel primer bulb until fuel exits that hose with the tint of whatever oil you used. Reconnect the fuel hose.

That's it. If you want to test the heat warning system to ease your mind, have the key in the on position, then ground out the tan heat sensor wire that you'll find protruding from the cylinder head. The warning horn should sound off.


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