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I have just purchased a new aircraft with a new 912ULS. I have seen:
http://legacy.rotaxowner.com/si_tb_info/serviceb/sb-912-065ul.pdf and am subject to these inspections. My questions are as follows:

1. Any update on new floats to fix this problem to stop the 25 hour inspections?
2. Would these inspections be covered by the new engine warranty? and if so, how would I claim this?
3. Will replacing the floats be covered by warranty?

I must say, that for those not under warranty, Rotax should step up and fix the float problem at Rotax's expense.

Duane
  • Re: 25 Hour Carb Inspections

    by » 10 years ago


    Hi Duane,

    I don't have all the answers, but I do know a solution is coming. I think too much has been blown out of proportion with these floats. It isn't a huge issue. There has been just a few. Rotax and Bing are working on it. Rotax is and will take care of bad floats from the ones on the SB.

    If you have a sunken float you won't have to do this syringe test to figure it out. To me it is easy to detect and fairly obvious.

    Floats have always been capable of sinking, but since someone put it out in writing everyone believes it's a gigantic problem. Bing out sources these floats and the ones listed in the SB may have been affected from a bad batch. It's the normal closed cell integrity that has an issue.

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


  • Re: 25 Hour Carb Inspections

    by » 10 years ago


    I just dropped the bowls on mine and they looked fine. I weighed them at 6.47 and 6.52 gr which is in limits.

    Charlie

    LSRMA

  • Re: 25 Hour Carb Inspections

    by » 9 years ago


    I am not impressed with Rotax's handling of this issue. The inspection frequency is ridiculous. To make matters worse, Rotax specifies parts for a "syringe kit" that are not available. Try to source that special adapter and you will find nothing. So we are stuck removing the carbs to access the float bowls (at least on my plane) and messing up the sync every 25 hours or 60 days. I can't imagine a company in a different space being so consumer unfriendly. Shows you what happens when competition is limited.

    BTW, I had a sunk float and the engine ran terrible at idle, but was okay at high RPM. Gas was also leaking out of the carb vent tube.

    RotaxOwner: thanks for the nice video, but how do we get the syringe kit?

    Thank you said by: Perry Chappano

  • Re: 25 Hour Carb Inspections

    by » 9 years ago


    Hi Mike,

    I personally wouldn't use the syringe. Just weigh them and visually check them for sinking. I can weigh them much faster than using the syringe method. Just push the carb back out of the rubber socket and lift it up about 2". This should allow you to clear an drip try and pop the bowl off.

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


  • Re: 25 Hour Carb Inspections

    by » 9 years ago


    Roger,
    I bet this method won't disturb the sync. Correct? Would the bowl gasket need to be replaced each time the bowl is removed? I like this method MUCH better than squirting gas into a hole to see when it drips out another......
    BTW... Is another type bowl gasket that can be reused multiple times available?

    Thanks
    Dave Rigotti

    Hi Mike,

    I personally wouldn't use the syringe. Just weigh them and visually check them for sinking. I can weigh them much faster than using the syringe method. Just push the carb back out of the rubber socket and lift it up about 2". This should allow you to clear an drip try and pop the bowl off.

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