have 1990 Evinrude 90HP and want to disable VRO and just put oil in gas...what all do I have to do?
have 1990 Evinrude 90HP and want to disable VRO and just put oil in gas...what all do I have to do?
Why would you want to get rid of your VRO system if it's operating correctly. I guess it' still works. I had a 1989 Evinrude 150XP and to pervent from blowning up the engine just in case the VRO system would stop operating I would add 100:1 ratio of oil to the gas tank. Engine would smoke alittle more but never blow the engine. Just a though.
PS. If you still want to remove the VRO system , I'm sure the guru's on this forum will help you out. Good luck.
You must feel that system is very reliable if you thought you needed to double oil. I blew a motor with that automatic system. One thing is for sure if it works itsfine,
when something goes wrong the motor is toast!
Remove the oil inlet hose connection nearest the vro pump and plug it off with a suitable plug and clamp.I used a I believe it was a 3/8" sized stainless steel bolt with a smoothe shank and cut the threads off leaving just the smoothe shank and bolt head and inserted into hose and secured it with a stainless steel hose clamp.Next ..trace the three wires leading from the vro pump to a rubber amphenol connector in the engine compartment and disconnect it and secure both ends so they aren't flopping around loose.This will disable the vro alarm.Then.. trace the two wires from the vro oil reservoir to their connectors in the engine compartment and disconnect and secure them.This will disable the low level oil reservoir alarm.
Mix TCW3 oil at 50:1 in fuel tank and then temporarily disconnect the fuel line inlet nearest the vro pump and pump the fuel primer bulb slowly until you can visually detect a hint of the two cycle oil color in the fuel exiting the disconnected hose.This will insure that the fuel mix is available at the vro inlet before startup.Then reconnect the fuel hose.
May just as well remove the now out of service oil reservoir and hose from boat.
Next , to insure that the overheat alarms are still operational,locate the tan wire lead from one of the head temp sensors,and with the key in the 'on' position ,ground the tan lead to the engine block and listen for the alarm tone.It should sound.To ground the tan lead you can peel back the connector sleeve to expose the wire or back probe it with a test lead.
Rick
thank you Rick, exactly what I was looking for..said it before, this board is the best
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