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  1. #1
    Seaman 1fullforce's Avatar
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    Default question about a 1987 85 hp force propeller

    hi guys , I FINISHED REBUILDING MY CARBS, NEW FUEL PUMP , NEW IMPELLER , THANKS TO ALL OF THE INFO/ TIPS ON THIS SITE AND ALSO ON MY REPAIR MANUAL, DOES ANYBODY KNOW HOW TIGHT THE PROPELLER NUT NEEDS TO BE (TORQUE SPEC.) I DO NOT WANT TO GET IT TOO TIGHT OR TOO LOOSE. THANKS IN ADVANCE
    1987 85 HP MODEL 856X7A

  2. #2
    Petty Officer 1st Class
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    Default Re: question about a 1987 85 hp force propeller

    My little hand book that came with my 1984, 85 hp said to tighten the nut so there is no more play fore and aft. I thighten mine just a bit past that.
    My nut is a nylock type that goes on hard, as designed. Your engine since it is an 87 might be different. I am not sure.

    Hope this helps.

    Mike

    Just checked mercruiserparts dot com and the part number is the same on both engines.

  3. #3
    Seaman 1fullforce's Avatar
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    Default Re: question about a 1987 85 hp force propeller

    Quote Originally Posted by MWBROWN View Post
    My little hand book that came with my 1984, 85 hp said to tighten the nut so there is no more play fore and aft. I thighten mine just a bit past that.
    My nut is a nylock type that goes on hard, as designed. Your engine since it is an 87 might be different. I am not sure.

    Hope this helps.

    Mike

    Just checked mercruiserparts dot com and the part number is the same on both engines.
    thank you mike

  4. #4
    Captain MikDee's Avatar
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    Default Re: question about a 1987 85 hp force propeller

    IMO, Put the engine in neutral, Grab a prop blade with a glove, or hand protector, and tighten it with a wrench till just before it begins to slip from your grip. Then it will be just the right tightness to remove it in the future also.
    89'-19' Bayliner Capri Ski boat, with a 125hp Force
    My Previous Boats http://smg.photobucket.com/albums/v2...ee/My%20Boats/
    My motto - Keep It Simple Stupid

  5. #5
    Vice Admiral Scaaty's Avatar
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    Default Re: question about a 1987 85 hp force propeller

    Stick a 2x4 between the prop and anti-vent plate...crank it tight...good to go (pull yearly and use Marine grease on the splines..)

  6. #6
    Captain MikDee's Avatar
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    Default Re: question about a 1987 85 hp force propeller

    Quote Originally Posted by Scaaty View Post
    Stick a 2x4 between the prop and anti-vent plate...crank it tight...good to go (pull yearly and use Marine grease on the splines..)
    Way too tight for my liking, so be it.
    89'-19' Bayliner Capri Ski boat, with a 125hp Force
    My Previous Boats http://smg.photobucket.com/albums/v2...ee/My%20Boats/
    My motto - Keep It Simple Stupid

  7. #7
    Seaman 1fullforce's Avatar
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    Default Re: question about a 1987 85 hp force propeller

    I Found The Propeller Torque Spec. On My Repair Book , It Is ***55 Lbs*** For My 1987 85 Hp Force (propeller Nut Is A Self-locking Nut) Thanks Everybody

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