Thread: Torque Spec

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  1. #1
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    Torque Spec

    What is the torque for the flywheel bolt on a 2005 250XS


  2. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #2

    Re: Torque Spec (fastglass1)

    125 Ft. Lbs.



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  3. Member
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    #3

    Re: Torque Spec (EuropeanAM)

    Thanks again.

  4. Member
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    #4

    Re: Torque Spec (EuropeanAM)

    That's pretty tight. A typical 1/2" head bolt is only 95 to 105 lbs.
    Don, I'm assuming you mean the standard 1/2" bolts with SAE standard threads.
    The same grade bolt with fine thread would require less torque.
    Over torquing will actually reduce the load carrying capability of the bolt, along with potentially stripping threads.

  5. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #5

    Re: Torque Spec (fastglass1)

    John:

    Need to re-read the question:

    <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastglass1 &raquo;</TD></TR><TR><TD CLASS="quote">What is the torque for the flywheel bolt on a 2005 250XS

    </TD></TR></TABLE>

    125 ft. lbs is correct for this application on the flywheel NUT.



    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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    #6

    Re: Torque Spec (EuropeanAM)

    Your right Don, Somehow I was thinking jackplate bolt.
    Guess I was having a senior moment.

  7. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #7

    Re: Torque Spec (John Jackson)

    Don't feel bad, John! I've been known to miss a few myself....



    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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