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Author Topic:   Reserve Oil Alarm
logboy posted 04-27-2009 09:45 AM ET (US)   Profile for logboy   Send Email to logboy  
I have a 2004 DAUNTLESS 180 with a Mercury 135 two-cycle motor. I am receiving an alarm saying that the oil reservoir is critically low on the tachometer. The spedometer is showing that I have two gallons of oil in the reservoir. I am not sure where to do to fix the problem. I imagine that there are two separate sensors in the oil reservoir, one for the oil reserve alarm and the other for the oil reserve level; but I don't know how to fix. Anyone else had this problem?
jimh posted 04-28-2009 08:21 PM ET (US)     Profile for jimh  Send Email to jimh     
"I am receiving an alarm saying that the oil reservoir is critically low on the tachometer."

I am not familiar with low oil in the tachometer. Usually the low oil alarm monitors the level in the oil tank, not in the tachometer.

rsess1 posted 04-28-2009 08:46 PM ET (US)     Profile for rsess1  Send Email to rsess1     
I think he means that he is reading the low oil alarm in the digital read out screen on the Smartcraft tachometer gauge. Your on engine tank is probably empty. This is a real normal occurrence for the mercury oil delivery system. The system gets air in it and can't deliver the oil from the remote reservoir to the on-engine tank. You should have been receiving audible alarm, too, and the engine Guardian System would have limited the engine speed. You have two choices. With the engine off but the key to on, open the cap on the on-engine tank. The tank should fill. Other wise what I do is just fill up the on-engine tank with oil directly to the very top and tighten the cap very well. Works every time. On my Smartcraft gauge it gives a percentage-full reading on the on-engine tank. If it is dropping I know there is air leaking and the tank cap needs tightening after filling.
bluewaterpirate posted 04-29-2009 09:27 AM ET (US)     Profile for bluewaterpirate  Send Email to bluewaterpirate     
While the engine is running loosen the oil cap on the engine oil tank and it will fill back up. If it's full check the sensor that sits on top of your tank it could be defective. They're easy to replace.

Note: if the oil in the reservoir drop below the tanks sensors range the computer will restrict your engine rpms to below 1000. There will also be an audible alarm if this occurs.

Tom

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