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  1. 07-02-2012, 12:15 PM #1
    Destroyer
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    Mercury Optimax alarm - I've tried all the manual says - help

    I have a 2004 Optimax 150 hp emitting a 4 beep alarm every 2 minutes. I've changed the fuel filter, filled the oil reservoirs, bled the air from the oil reservoir under the cowl, I flushed the water journals too...still getting the alarm...any ideas on what to try next?
    Any help is appreciated.
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  2. EuropeanAM
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    #2 07-02-2012, 06:39 PM
    Welcome to BBC!

    I would recommend that you get the engine on the Computer Diagnostic System, and have PRINTOUTS of the following done:

    -Run History
    -Freeze Frame (Fault) History

    Information in these reports will indicate the precise fault that is occurring.... leading to a more accurate diagnosis of the problem.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
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  3. Chilly Willy
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    #3 07-11-2012, 03:11 PM
    try checking that dahm float in the engine mounted oil reservoir. I had the same alarm and the smart guage was telling me low oil.....oil was full but the float wasn't floating. New tank and a couple hours later and all is good!
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