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  1. #1
    Member
    Join Date
    Sep 2016
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    Spanway, WA.
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    98

    20 hour service Merc Warranty

    2B643656 2019 merc 250 Pro XS 4s. I was told that a mercury tech/ service department had to do the 20 hour service for the engine warranty. I was told that they had to confirm that break in was done properly. Is this true?
    Also I was out a couple days ago and the merc monitor did its check and all systems checked out. While under way the motor let out one beep and cut out. I started it again after I let it sit, all systems checked out. Ran it again and the same beep and cut off. Let it sit again, system checked out. Ran it for the next 2 days for about 5 hours with no further issues. Is this something I need to be concerned with? Should I have the dealership do the 20 hour service because of the issues described? Engine currently has 20 hours.

  2. Member
    Join Date
    Jun 2007
    Location
    Mountain Home AR.
    Posts
    4,144
    #2
    The 20 hour service is recommended not mandated and there is no reason why you can't do it yourself if you have the skills. I would definitely take it in to have the codes and data read before running again.
    2018 Z521L 250 PRO XS V8

  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
    Join Date
    Apr 2008
    Location
    Greenville, SC (US)
    Posts
    94,945
    #3
    As stated, the 20 hour service is not a MANDATORY service. It is recommended- and yes, you could do it yourself (service must be completed PROPERLY, and I strongly encourage you to use OEM Mercury fluids/filters).

    You do need to get the engine on the Computer Diagnostic System (G3-2019) for Printouts of the RUN HISTORY and the Freeze Frame (Fault) History. Don't continue running the engine knowing that faults occurred (until or unless proven that there is no longer a problem).

    While you're in for that, be sure to have the dealer perform Service Bulletin 2019-015 on your engine (EPA Decal Overlay).


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
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  4. Member
    Join Date
    Sep 2016
    Location
    Spanway, WA.
    Posts
    98
    #4
    Thanks for the information.