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  1. #1
    mtbr member
    Join Date
    Jun 2011

    frustrated with a used F4 from ebay

    hi riders. i just got a used 07 F4 from ebay. seller listed it as 2008 model but i found out yesterday it's actually 2007. but that's not why i'm frustrated. it's headshok. hope you guys can help me.

    i can't tell which fatty it is, it says ultra on the fork. the problem is that doesn't matter which way i turn the dial, there is no lock-out. suspension is very firm and bouncy. if i push it down it will pop right back, seems no rebound control at all. and the fork is very greasy.

    what do you guys think. do i have a bad fatty? are there way to test the headshok.

  2. #2
    mtbr member
    Join Date
    Jun 2009
    I have the exact same bike, it is an ultra fatty dlr. That year fork had many problems and mine was sent back for different guts. To find out if you have the new guts look at the schraeder valve, it should be blue. It sounds like there is to much air in there for your weight, adjust it.
    Also, mendoncycle on this forum is an expert with cannondale forks.

    _headshok_super_fatty_ultra_dlr_dl_owners_manual_s upplement_en.pdf

  3. #3
    Ridin' dirty!
    Reputation: cdalemaniac's Avatar
    Join Date
    Jun 2007
    My guess is that suspension fluid leaked from the cartridge....send it in for a service or replace the guts as there was a machining error on some models causing excessive fluid leaking....
    Did the guy mention anything about the fork guts being busted?
    Try to return the bike or get some money back so you can get it properly serviced.....
    "Common sense isn't always that common!"
    Custom Prophet and Custom Delta V

  4. #4
    mtbr member
    Join Date
    Jun 2011
    thanks guys. i'll look at the valve tomorow to see if it's blue.

    i'm curious, how much $ would such service normally cost.

    other than the headshok, the bike itself is a beauty. pure white, hand made in the U.S. love it.

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