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#11245831 - 11/26/15 08:43 AM Low oil beep Mercury optimax
CorySmith Offline
Extreme Angler

Registered: 11/24/10
Posts: 1289
Loc: Nacogdoches, TX / South TX
I'm on the lake fishing right now and I'm getting 4 beeps every 2 minutes when my motor is running....I have a 2010 90hp optimax......I googled it and it said that it is the low oil alarm.....my tank is full! What could be the problem? Is it safe to still run it today or should I go in?
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#11245835 - 11/26/15 08:45 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
Tom Mayne Guide Service Offline
Pro Angler

Registered: 02/23/11
Posts: 507
Check the oil tank under the cowling and make sure it is 100% full. You are safe to run.


Edited by Tom Mayne Guide Service (11/26/15 08:46 AM)
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#11245838 - 11/26/15 08:47 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
lakeforkfisherman Offline
Elliptical Mechanic

Registered: 08/04/06
Posts: 8622
Loc: Dallas/Quitman
The onboard tank or the tank on the motor? The alarm goes off the sensor from the tank on the engine. If it's about 1/4 low, it will beep. Fill the engine tank up (ALL the way) then make sure the cap is tight. You might also try raising the motor all the way up and then all the way down to see if maybe the float (engine tank) is just stuck. Check your oil lines from motor to boat and back to make sure they aren't pinched. If you still get alarm, take it to a shop soon. Good luck and be safe.
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#11245850 - 11/26/15 08:54 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
CorySmith Offline
Extreme Angler

Registered: 11/24/10
Posts: 1289
Loc: Nacogdoches, TX / South TX
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#11245854 - 11/26/15 08:54 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
Tom Mayne Guide Service Offline
Pro Angler

Registered: 02/23/11
Posts: 507
If the small tank under the cowling is not 100% it will go off. Oil tank sensors are known for going bad also on Mercurys. One other thing you can do is if it is NOT 100% full loosen the cap while motor is running and let the oil fill up but be sure to get the cap back on before it over flows or it will make a mess. 4 beeps every two minutes is saying don't panick but get me checked out smile 1 looooong beep is oh [censored]! Hope this helps
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www.lakepalestinefishingguide.com

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#11245877 - 11/26/15 09:11 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
propman Offline
Angler

Registered: 04/06/10
Posts: 400
Loc: Pilot Point, TX
Are you sure it's not the overheating alarm? You might need a new impeller.

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#11245895 - 11/26/15 09:19 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
Frank the Tank Online   content
TFF Guru

Registered: 02/27/13
Posts: 17630
Loc: Rockwall & a lake somewhere
If it were me I would head back toward the ramp and fish close to the ramp, that way if you get the long beep, you can troll back no problem. If it's still under warranty, then run it hard and let her rip!
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#11245912 - 11/26/15 09:25 AM Re: Low oil beep Mercury optimax [Re: Frank the Tank]
Ranger1 Offline
TFF Celebrity

Registered: 08/28/03
Posts: 5103
Loc: Allen, Texas
Tom Mayne is correct, 4 short beeps you can go several days (Not recommended). One long beep you have just ran out of time. Sensor is pretty much on top of reservoir, does not take much for it to start the beeping process.
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#11245931 - 11/26/15 09:35 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
Paul Jeffcoat Offline
Extreme Angler

Registered: 08/20/03
Posts: 1626
Loc: Azle, Texas, USA
Looking at your model (picture) sounds like the sensor is needing replaced. Shouldn't be going off until your only 1/4 tank left.

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#11245939 - 11/26/15 09:38 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
jumpnjohnfish Offline
Extreme Angler

Registered: 12/15/04
Posts: 1542
Loc: Ft Worth
Float in the oil tank has sunk to the bottom thinking you are low on oil. Will need a new oil tank
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#11246047 - 11/26/15 10:22 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
CorySmith Offline
Extreme Angler

Registered: 11/24/10
Posts: 1289
Loc: Nacogdoches, TX / South TX
Thank yall! I'll take it in and get it checked out!
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#11246136 - 11/26/15 11:08 AM Re: Low oil beep Mercury optimax [Re: CorySmith]
Andrew Y'Barbo Offline
Extreme Angler

Registered: 06/25/12
Posts: 1111
Loc: Lufkin Texas
Fill the tank up. And unplug the sensor. Should be an open contact sensor I believe. If it quits beeping then it's the sensor. Gota love the optimax.

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#11246273 - 11/26/15 12:21 PM Re: Low oil beep Mercury optimax [Re: CorySmith]
LvilleLrat Offline
TFF Celebrity

Registered: 12/12/06
Posts: 5586
Loc: Corinth, TX (Denton)
The float in the oil tank under the cowling is off and causing the sensor to read no or low oil. Happened to me. New oil tank for under cowling around $50.
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#11246340 - 11/26/15 01:12 PM Re: Low oil beep Mercury optimax [Re: CorySmith]
SIR-FISH-LOT Offline
Angler

Registered: 10/21/12
Posts: 465
Loc: MESQUITE,TX
Oil pump could be going bad, that what happen to my father engine burn it up.
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#11246549 - 11/26/15 03:47 PM Re: Low oil beep Mercury optimax [Re: CorySmith]
BrotherB Offline
Outdoorsman

Registered: 07/09/15
Posts: 225
Loc: Athens tx
I'd rather mix my fuel and know it has oil. I'd take that vro tank off and plug the hose using the vro pump as my fuel pump and just mix it and be done with it that motor is to expensive to not know for sure how much oil it's getting. The vro pump went out on my dads and when it did it beeped one time and it was to late the motor was already blown up just my .2 cents

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