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36" bunton wb transmition probs?

Discussion in 'Mechanic and Repair' started by lasher66, Sep 30, 2007.

  1. lasher66

    lasher66 LawnSite Senior Member
    Messages: 398

    My tranny on my 36" bunton walk behind is stuck in either 4th or 5th gear. It will not shift down below 4th. Can someone tell me what might be causing this and if there is anything I can do to fix it. The mower is only 2 yrs old and not even used that much. Any help would be appreciated.


  2. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    If the shifter does move but doesn't change the gears the shift keys are broke which requires disassembly to replace.

    Do you shift of the fly ? Doing this is really bad on the shift keys.
  3. lasher66

    lasher66 LawnSite Senior Member
    Messages: 398

    The shifter only moves between 4th and 5th, it wont go below 4th. Right now it is not a big deal because I only mow in 4th, but eventually I am going to want this fixed. I never shift on the fly either. Thanks for the reply.

  4. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Sometimes the shift detent ball/spring gets rusted and hangs up, If this is the problem doing the below should solve it.

    On the top case half just below the shifter you should see a allen set screw. Count the turns it takes to remove it then shoot some penetrating oil (Fluid Film) in the hole and work the shifter back and forth. If it is now moving freely re-install the set screw the same number of turns.
  5. pugs

    pugs LawnSite Gold Member
    Messages: 3,024

    Rob, this might not be the case...its a Bunton. They were using a Dana trans on them probably in the timeframe that he bought this one. Not the usually Peerless 700.

    It may be in the same spot and it may not...really not sure. If you can get me the model number I can try to post up a parts breakdown of the trans. Or you could even look it up yourself on bobcat/bunton's website.

    Could it be something with the safety switch hanging things up? I dunno what would do it on a Peerless 700 and I really dont know on one of those Dana's...LOL

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