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Mariah R21 Loud beeping noise

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Old 07-14-2020, 10:03 PM   #1

Mark Somerville is currently offline
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Post Mariah R21 Loud beeping noise
New owner last year of a used 2012 R21 Model. Last week on the water experienced a very loud beeping sound, that persists until the engine is past 3,000 RPM's but then starts up again at low RPM and starting the engine.
Anybody know what this warning signal is about?
Thanks!
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    • Old 07-14-2020, 10:53 PM   #2

    mikeyt is currently offline
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    Default Re: Mariah R21 Loud beeping noise
    Mercruiser Warning System & Beep Codes
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    Thank you mikeyt for this useful post!
    Mark Somerville (08-05-2020)
    Old 08-05-2020, 12:54 AM   #3

    gmoney is currently offline
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    Default Re: Mariah R21 Loud beeping noise
    As did mine. Check your outdrive fluid reservoir. Mine was just low. Added maybe half a cup and beeping fixed. But mine is 7.4, with the external reservoir.
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    Thank you gmoney for this useful post!
    Mark Somerville (08-05-2020)
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