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1993 Mariner Magnum 40 HP

Discussion Forum at MarineEngine.com » Mercury Mariner Outboard » Archive through July 09, 2009 » 1993 Mariner Magnum 40 HP « Previous Next »

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Chris Cummings
New member
Username: okmacman

Post Number: 1
Registered: 07-2009
Posted on Monday, July 06, 2009 - 12:02 pm:   Edit Post Delete Post View Post/Check IP

I thought I posted this, but can't find it. Well, here it is again:

After not running for 2 years, fuel additives to clean carb apparently didn't clear sticky float in top carb, so I had to take it off. To do that, I had to remove the oil reservoir. When I did, it slipped and pulled the feed tube from the reservoir, and apparently pulled the wires free from the disconnects.

When I put everything back together, I had to find the connectors to plug the wires back into, which I did. However, now when the key is in the ON position, I get a constant beep-beep-beep. Engine will start and run, but beeps continue.

I disconnected the wires again and no beep-beep-beep. It appears that this is a low oil warning and if so, I visually verify the oil level before each and every run.

Question is: Is this just a low-oil warning sensor gone bad, or is it something else?
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Graham Lamb
Senior Member
Username: galamb

Post Number: 5552
Registered: 05-2007


Posted on Monday, July 06, 2009 - 10:49 pm:   Edit Post Delete Post View Post/Check IP

Very well could be - the oil level sensor is a magnetic floating kind contraption. You may have broke it simply by removing the oil jug.

If you feel confident that you won't forget to keep the oil topped up I wouldn't even bother trying to fix/replace it.

It doesn't tell you whether the oiler is working, just how much you have in the jug...

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