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1989 Johnson 40 hp buzzer problemalarm

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Brent wilson

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Can you disconnect the vro sy

Can you disconnect the vro system and still have the alarm for the temp? My buzzer went off today and the oil tank is 3/4 full and plenty of water is and was flowing from the pee hole. I would like to mix my oil but i would like to keep the alarm for my overheating purposes if i run into that situation. How do you dissconect the vro pump? Any help greatly appreciated
 
"Brent.... You don't say e

"Brent.... You don't say exactly what the warning was. A steady constant beep would indicate overheating, a beep every 20 seconds would be a oil level of 1/4 tank, and a beep every other second would be a VRO failure, oil restriction, air leak in the oil line, etc.

However, to answer your question. 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 quanity 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.

Joe (30+ Years With OMC)"
 
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