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Posting a reply to: Re: Merc Optimax 2 stroke 75hp beeping

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ToddC

Posted 7/9/2020 3:30 PM (#963247 - in reply to #962847)
Subject: Re: Merc Optimax 2 stroke 75hp beeping

Posts: 320

I had a old 1988 50 hp 2 stroke mercury that did the same thing. Oil tank was attached to the motor with the fill cap on top the cover. One day it started beeping low oil but there was oil the tank and smoke in the exhaust. Called a local merc dealer and they said that the oil float in the reservoir will get oil logged over time and sink to the bottom of the tank and cause the alarm. The only fix was to order a new oil reservoir or cut the wire for the alarm. They told me which color wire it was and I clipped it while I was on the phone with them. The beeping stopped and I never had any issues with it. I use always checked the oil level and made sure I topped it off. Good luck!