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Thread: prop nut torque

  1. #1

    Default prop nut torque

    I was wondering how tight the prop nut should be on a pin driven prop. Just wondering as should it be snug or very tight.

  2. #2
    Chief Petty Officer rrhodes's Avatar
    Join Date
    Jun 2008
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    Columbia, SC
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    636

    Default Re: prop nut torque

    Each manufacturer has different specs. We need make, model and year specs to help.
    Rick
    2008 JC Neptoon 25TT
    115hp Honda 4-stroke
    2007 Suburban LTZ
    Lake Murray, SC

  3. #3

    Default Re: prop nut torque

    its a Johnson 25r70 (1970 25 hp) to get the cotter pin in it can either be snug or I can turn it one more turn to get the pin in and thats about it.

  4. #4
    Supreme Mariner kenmyfam's Avatar
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    Aug 2006
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    Belle River, Ontario.
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    14,257

    Default Re: prop nut torque

    What I do.

    Finger tighten the prop nut and then tighten just enough to get the pin in.
    I have not lost one yet !!! (touch wood)
    Marada 2100 Executive Series, 5 Litre V8 with Mercruiser Alpha 1 outdrive. 2007 K-Z Spree 260 RBH, all = a whole lot of family fun !!!!

  5. #5
    Cadet capped's Avatar
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    Mar 2009
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    Pennsylvania
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    24

    Default Re: prop nut torque

    I just bought a turning post rascal and it recommends 30ft-lbs or refer to the engine manual(03 25hp mercury). Dont know if this helps but figured i'd throw it out there.

  6. #6
    Petty Officer 2nd Class
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    CC, TX
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    Default Re: prop nut torque

    Gently like a spark plug...just tight enough to get the pin in.

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