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  • Re: Finding gearbox serial number via engine serial number

    by » 6 years ago


    678999 is not a valid engine serial number (it must have seven digits!) Can you check it?

  • Re: Finding gearbox serial number via engine serial number

    by » 6 years ago


    Mea culpa. Engine no. is 6759989.

    On the Type C gearbox inside the housing halves are raised numbers "6810021" and "6810011".

    Also, on the prop side half are raised numbers: "94 (encircled) 1286" while the other half has "05 (encircled) RX01 SCF". However, hand etched near the edge is "KF 74".

    Rotaxese is a difficult language to translate.

  • Re: Finding gearbox serial number via engine serial number

    by » 6 years ago


    6759989 was produced 08-Jul-2008

    Engine Type: ROTAX 582 UL Mod.99
    Model Number: 395820010

    Original Factory Configuration:
    with oil pump
    with rewind starter
    with 2 Bing-carburetors 887833
    water outlet socket bent

    That engine doesn't have additional sub-assembly part or serial numbers listed , so I can't tell you the original gearbox it shipped with (on some engines we have this information available, but not this one).

    "6810021" and "6810011" are actually the part numbers for the gear housings
    (properly "810021" and "810011"...)

    Sorry I can't be more helpful, but that's all that the factory database has for you on that engine.

  • Re: Finding gearbox serial number via engine serial number

    by » 6 years ago


    Our 912ULS 100 HP engine serial number is 5646675. We would like to know the gearbox serial number that was originally fitted whit this engine and the serial number of the replacement gearbox. Our main gear (the larger one) serial number is 061314, should it be the same as the gearbox serial number?

    Thanks for your help

  • Re: Finding gearbox serial number via engine serial number

    by » 6 years ago


    5646675 was produced 07-Jun-2006

    Engine Type: ROTAX 912 ULS
    Engine Version: 912 ULS2
    Model Number: 309120110

    Original Factory Configuration:
    without fuel lines
    UL2 I=2,43 with clutch
    without vacuum pump
    with green valve covers
    without mech. tachom. pick up
    without external generator
    without air guide baffle
    with std. temperatur sensors
    with screw connection UNF
    with expansion tank
    without air box
    without engine truss
    starter large

    The original gearset serial number is shown as 06.1314
    The original gearbox assembly serial number is shown as 32370

    The factory database does not track 'part replacements', such information will be in your engine logbook.
    Gearsets each have their own serial number, independent of the gearbox serial number.

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