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  • Re: Carb serial number lookup?

    by » 2 years ago


    It seems to me that if your floats are that old, and have been high and dry for that long, you certainly DO want to replace them once you have opened up your float bowl.  Indeed, you might want to consider a full carb overhaul as well, since gaskets and O-rings do go bad just with age.


  • Re: Carb serial number lookup?

    by » 2 years ago


    Kalle Vaaraniemi wrote:

    Engine has been inactive inc maintenance from 08/2006 - now.

    Fourteen years is a very long time for an engine just to be sitting somewhere.

    Actually, the engine is past its TBO calendar time now - so technically it's due for overhaul before you put it back into service. 

    In the operator's manual (section 8.1) there is a specified protocol for preserving the engine if its going into storage

    The Operator's Manual section 8.1 gives the procedure for putting the engine into storage, and section 8.2 discusses putting the engine back into operation:

    " If preservation (including oil change) took place within a year of
    storage, oil renewal will not be necessary. For longer storage
    periods repeat preservation annually.
     "

     

    The line maintenance manual (section 05-10-00) specifies:

    " Observe the storage and preservation directives!
    NOTE 
    The maximum possible storage period of the engine is limited to 24 months.
    If this period is exceeded, the engine must be sent to a ROTAX® authorized overhaul facility for inspection.
    "

    The Installation manual (section 10-10-00) advises:

    " If the engine is stored for a period longer than 12 months (not stored in the
    GENUINE-ROTAX packing) then maintenance tasks must be carried out
    every 3 months as per the currently valid Maintenance Manual, section
    “Preservation of a new engine“.
     "

     

    The Heavy Maintenance Manual (section 71-00-00) notes:

    "If the engine is stored longer than 12 months, the following inspections must be
    carried out every 3 months:
    - Remove one spark plug on each cylinder and turn crankshaft by hand 2 full
    turns. Refit spark plug.
    - Visual inspection for corrosion (e.g. on propeller shaft). If corrosion is detected,
    the engine must be sent immediately to an authorized overhaul facility for
    inspection.
    WARNING: The engine must not be taken into operation.
    NOTE: The maximum possible storage period of the engine is limited to
    24 months.
    If this storage period is exceeded, inspect following steel components for
    corrosion:
    - camshaft, crankshaft, gear set and propeller shaft
    If corrosion is detected, the engine must be sent immediately to an authorized
    overhaul facility for inspection.
     "

    And that's for a new engine...  Section 5.2 gives directives for an engine which has been in operation:

    CAUTION: Maximum storage period 12 months if the listed precautions are
    taken!

    – Oil change see latest issue Maintenance Manual (Line Maintenance) for the
    respective engine type, 912 Series or 914 Series.
    – On the ROTAX 912 Series: Run the engine to allow it to warm up, leave it
    running at increased idle speed, remove the air filters and inject approx. 30
    cm
    3 of preservation oil into the carburetors, shut down the engine.
    – On the ROTAX 914 Series: Remove the top spark plugs from all four
    cylinders and spray preservation oil into the cylinders through the spark plug
    bores.
    Turn the crankshaft several times.
    Fit spark plugs and spark plug connectors.
    – Drain carburetor float chambers.
    – Apply engine oil to all linkages on carburetors.
    – Close all openings on the cold engine, such as the exhaust pipe, venting tube
    and air filter intake against entry of dirt and humidity.
    – Spray all external engine steel parts with preservation oil.
    – In the event of longer out of service periods repeat the whole preservation
    procedure annually.

    Section 5.3 ' Returning the engine to service" specifies:

    " – Complete 100 hour inspection if engine has been out of service for more than
    one year. "

     

    You can download the compete set of your engine manuals from here:

    https://www.rotax-owner.com/en/support-topmenu/engine-manuals#912-series-engines

     

     

     


  • Re: Carb serial number lookup?

    by » 2 years ago


     Hi, I have a request of the Rotax Owner Admin.

    I am new subscriber to the Rotax-Owner website and I have a 914UL that appears to possibly need new floats since it recently began running very rough at startup and the last time I tried starting it, it would not keep running.  My engine was installed in 2018 and although the serial number is not included in the ASB 914-051, the carburetors maybe part of the affected serial numbers.

    Is it possible to a carb serial number lookup on my engine serial # 9.576.570

    I appreciate any help you can provide.


  • Re: Carb serial number lookup?

    by » 2 years ago


    Engine 9576570  (produced 01-Dec-2017 )

     ROTAX 914 UL

     914 UL2-01

     30914001 

    • UL2 I=2,43 without clutch
    • without vacuum pump
    • without mech. tachom. pick up
    • without external generator
    • without air guide baffle
    • with std. temperatur sensors
    • with screw connection UNF
    • with expansion tank
    • starter standard

    As shipped, your carb serial numbers were 17.4519  and  17.4406  - and those 'original carbs' should be exempted under the umbrella of the engine serial number.  If you have any reason to believe that one or more of your carbs has been changed ( engine log book?) then you need to physically check the carb serial numbers.


  • Re: Carb serial number lookup?

    by » 2 years ago


    Thank you for that information.


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