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I upgraded my 912iS to iS sport. On subsequent flights I have found a moderate, intermittent,
high frequency vibration. I recently changed oil and inspected the magnetic plug and found
two small iron particles and some bright metal flakes in the filter. I have also heard that
other operators are also experiencing similar problems associated with the gearbox. Can you shed any light on the issue?
  • Re: 912iS gearbox

    by » 9 years ago


    Hi Richard,

    It depends on what these particles look like. If they are just a few tiny slivers (whiskers) then that may be normal. If they are chunks then it probably isn't. You can see pics in the manual or SB's to what is acceptable and not.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


  • Re: 912iS gearbox

    by » 9 years ago


    Dear Richard:

    I had the same problem with my gearbox. Contact with rotax dealer.

    See http://www.rotax-owner.com/en/rotax-forum/is-technical-questions/5284-gearbox-912is-update-to-is-sport

    Here you can see my metal flakes.

    Send me you email and send to you a Rotax file pdf

    I can not upload

    Bye

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