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  1. #1
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    How to find your serial number on your Mercury outboard

    Seems to be asked quite a bit so I thought I'd help a little in this regard. Don or Sherm might jump in on this but pictures speak a thousand words they say. Most know the most logical place is a plate on the motor

    First one is more of a distance shot to give you an idea - most I know are on the starboard side of the motor



    and a close up view of what that tag could look like (info on tag may vary)



    and then if you can't find that - look for the welsh plug as it'll be stamped on it



    Remember its Digit, Letter, 6 more Digits (except older motors) and rebuilt motor may not have the serial number.

    Remember - Mercury DOES NOT go by year but by serial number when it comes to ordering parts etc.
    Last edited by Wildcat Dude; 03-31-2015 at 03:29 PM.

  2. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #2
    Pinning to the "Commonly Asked" sticky on the 3L Forum. Thanks, Charles!


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 46 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  3. Banned
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    #3
    Thank you sir.

  4. Member fishing fanatic's Avatar
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    #4
    Where on the engine is the welsh plug located?

  5. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #5
    Quote Originally Posted by fishing fanatic View Post
    Where on the engine is the welsh plug located?
    SOMEWHERE on the powerhead (location varies). If you need further assistance locating your serial number, I would suggest opening a separate topic for your engine.


    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 46 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  6. Member
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    #6
    Since the original pictures have, for the most part, disappeared, I took pictures of my engines yesterday.

    Both my engines have a serial number label on the starboard side of the swivel bracket.

    My 8hp...



    My 150...



    8hp welch plug with stamped serial number...



    150hp label on starboard head...



    I looked for a serial number stamped welch plug on my Optimax but could not find one. Some engines may, or may not, have them.

    Hope this helps those searching for serial numbers.
    Attached Images Attached Images
    _______

    Phil
    '09 Hewescraft ProV
    '09 150 Optimax


  7. Member
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    #7
    Thought I'd add a close up of a label for clarity. Note the max recommended RPM is also on the label as well as date of manufacture. Shows why the pros constantly remind us Mercury doesn't use "years", my engine was manufactured Oct 2008 but is a 2009 "model year" engine.
    Attached Images Attached Images
    _______

    Phil
    '09 Hewescraft ProV
    '09 150 Optimax


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