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A couple of more JD 800 series problems

Discussion in 'Lawn Mowing' started by NINER, Jun 11, 2009.

  1. NINER

    NINER LawnSite Member
    Messages: 204

    anyone having trouble from these two issues?
    first the bolt that holds the idler pulley arm has either bent or broken on three different mowers.
    second the mower deck drops a notch or two when hitting bumps in the lawn.

    what has been done to fix these issues and has it lasted?
  2. NINER

    NINER LawnSite Member
    Messages: 204

  3. Herrick

    Herrick LawnSite Senior Member
    Messages: 506

    my idler pully bracket bolt for the drive system broke a few weeks ago on me, dealer took care of it. I asked why it broke and they had no clue.
  4. nnj18

    nnj18 LawnSite Silver Member
    Messages: 2,860

    No problems with my 850.....how many hours on these machines??
    Posted via Mobile Device
  5. 7625

    7625 LawnSite Member
    Messages: 63

    I haven't had any problems like that, and I have a 830.
  6. NINER

    NINER LawnSite Member
    Messages: 204

    mine range from 500 to 600 hrs on them. i have replaced what is called a leaf spring and the other part that adjusts the mowing height on one mower in particular twice. the others haver been just the spring.
  7. rreyn1812

    rreyn1812 LawnSite Senior Member
    Messages: 444

    At about 200 hours (1 year old), I noticed a broken bolt on the left side of the mower (Ztrak 830a) that is part of the deck lift mechanism. The head of the bolt just broke off, but it looked like a manufacturing problem with the bolt.

    The original bolt was 12mm, but when looking at the new parts list, the replacement bolt is a 16mm. Therefore, a large portion of the deck lift mechanism had to be replaced to accomodate the larger, beefier bolts. Obviously, JD was aware of the problem and already had a solution and it was fixed under warranty.
  8. JD7210

    JD7210 LawnSite Member
    from Midwest
    Messages: 23

    I have 800hrs on a Z830A and 450hrs on a Z850A and have yet to see those problems. Are most of you happy with your machines since the updates have been done? Overall we are satisfied with the updates, and have had no problems.
  9. ed2hess

    ed2hess LawnSite Fanatic
    Messages: 14,451

    Try hardened bolts in places where you have broken bolts.
  10. joslawn33

    joslawn33 LawnSite Member
    Messages: 48

    Very happy with my 830 500hrs.

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