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Thread: F650GS Preload Adjuster Stuck

  1. #1
    Registered User kckrych's Avatar
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    Question F650GS Preload Adjuster Stuck

    I have a 2011 F650GS with a rear spring preload adjustment know that will not move. I brought it to the shop that I purchased it from and they were stumped. They suggested I bring it back when their "Lead" mechanic was working. I will do that but in the mean time any body else have this issue or any suggeted fixes? thanks.

  2. #2
    Not at all convinced I can helpe here, but we need more info. I'm assuming a hydraulic adjuster with stuck valving but mechanical adjuster wioth a corroded adjusting ring is possible.

    So, we need adjuster type, adjuster position, up down middle, etc, and what it exactly will or won't do.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://web.bigbend.net/~glaves/

  3. #3
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    If it is the F650GS (twin) then it is a mechanical adjuster (not hydro),
    and is at the top of the spring.

    (Not surprisingly) At the upper end of the preload range the knob is hard to turn.
    There is a special wrench under the seat that makes it easier to turn if needed.

    I usually put my bike on the centerstand and then with a bit of muscle, am able to get the preload set as desired without resorting to the wrench.

  4. #4
    Registered User kckrych's Avatar
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    Thanks for the replies. It is an F650GS Twin with mechanical adjuster at the top of the spring. I have tried the plastic tool and putting the bike on its centerstand. The plastic tool does give some advantage but the knob still will not move. Afraid that if I really lean into it I will break something and the warrantee will go bu-bye.

  5. #5
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    Quote Originally Posted by kckrych View Post
    Thanks for the replies. It is an F650GS Twin with mechanical adjuster at the top of the spring. I have tried the plastic tool and putting the bike on its centerstand. The plastic tool does give some advantage but the knob still will not move. Afraid that if I really lean into it I will break something and the warrantee will go bu-bye.
    First-Welcome to the forum! Second, now that I know it's the knob thing that you are trying to change, I suggest this-



    Mine on the f8 wouldn't move with the plastic tool provided. You could use a heavy cloth and channel-locks to get you going.
    The tool is available from TouraTech along with a great catalog-
    Multi Tool HTH Gary
    "You can do good or you can do well. Sooner or later they make you choose." MI5
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    2009 F800GS 1994 TW200

  6. #6
    Registered User dadayama's Avatar
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    For the record... when i had my OEM shock... i could move the knob with my bare hands with out to much effort, though it was easer with the plastic turner thing...

    Seems fishy to me or you are just a wimp : )

    anyway... let us know how it works out

    Pedro
    Ich Fahre Nicht Zu Schnell, Ich Fliege Nur Niedrig
    Oklahoma Adventure Trail

  7. #7
    Registered User kckrych's Avatar
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    Thumbs up Resolution

    The adjuster issue has been resolved. There is good news and there is bad news.

    Good News: I can now easily adjust the spring preload using a simple 8MM socket.

    Bad News: The screw that held the plastic adjustment knob has broken off inside the adjusting shaft.

    At this point I am putting the plastic knob in a safe place and enjoying the bike until I can figure a way to remove the broken screw without more damage.

    Thanks for the replies (even the one that suggested I was a wimp!)

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