vro disconnect

[wayne 39]

i have a 94 120 evinrude. i thinking about disconneting the vro. can someone tell the best way to do this? it hasn't given me any trouble <br />"yet" but what if?

 

[Joe Reeves]

Re: vro disconnect

Wayne.... The following may be of interest to you.<br /><br />(VRO Changeover Judgement Call) <br />(J. Reeves)<br /> <br /> The VROs first came out in 1984 and have been upgraded quite a few times. In my opinion, back around 1988, they had perfected them but I think that they were upgraded even more since then. As long as the warning system is operating as it should, I feel quite at ease with them.<br /><br />Some boaters have voiced their thoughts such as "What if that overpriced plastic horn should fail while I'm under way for some reason, and the VRO decides to fail five minutes later?" Obviously that would result in a big problem which really brings their fears into view.<br /><br />The word "ease" is the key word though. If one has the slightest feeling of being ill at ease with that setup, then they should take the route they feel more at ease with. A judgement call each individual would need to make on their own.<br /><br />********************<br />(VRO Pump Conversion To Straight Fuel Pump)<br />(J. Reeves)<br /><br />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:<br /><br />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.<br /><br />2 - Trace the two wires from the oil tank to the engine, disconnect those two wires, then remove them and the oil tank.<br /><br />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.<br /><br />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.

 

[wayne 39]

Re: vro disconnect

thanks for the info. have you seen many of the vro go out? it looks like if one side of the pump would stop and they are made together that both sides would stop

 

[DJ]

Re: vro disconnect

wayne,<br /><br />VRO's seldom fail, on their own. Maintenance of the system is unheard of and seldom done.<br /><br />To maintain it, do this:<br /><br />1. Empty the oil tank.<br /><br />2. Replace the filter (sock type).<br /><br />3. Refill with a good TCW-3 rated oil.<br /><br />4. Reprime. USE ONLY OMC/BOMBARDIER clamps. There is a difference. <br /><br />5. Check the hoses for brittleness and leaks.<br /><br />6. Mark a line on the oil tank-for reference.<br /><br />7. Pre-mix @ 50:1 until you see that the oil is being used from the tank.<br /><br />You're good to go, from there.<br /><br />It's a good systm, much maligned by technicians/mechanics looking for a cause.

 

[gggreen64]

Re: vro disconnect

RE: 1993 Evinrude 70 Oil Pump<br /><br />Thanks to both of you for bringing me in from the dark. I knew from the shop manual that I needed to disconnect the oil tank wires, and plug the oil line. But,I could not find the wires from the oil pump. Everything works great now. <br /><br />Thanks again,<br />Gary<br /><br />Sail on oh ship of fate