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to have right fuel level in bowl Is it correct to set float needle bracket height at 10.5 mm measured from bowl bottom to TOP of bracket as shown in figure ?

is it correct to bent tab to correct height ?

bracketheight_2018-08-04-2.png (You do not have access to download this file.)
  • Re: float needle bracket height

    by » 6 years ago


    Yes

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


  • Re: float needle bracket height

    by » 5 months ago


    I have a lot of fuel in my carb bowls. Like 4 mm from top. 

    Floats weigh <7 grams..more like 6. So I assume I need to adjust these brackets. Anyone have a video or some pictures of how it is done? 

    Couldn't find a good r912 video online. 


  • Re: float needle bracket height

    by » 5 months ago


    This job is fairly say. The carb needs to come off. Remove the bowl and floats. Get a millimeter ruler. Point the carb upside down so the brass float armature is facing up. Place the millimeter ruler on the edge of the carb edge where the gasket normally sits. Slide the numbered side over to the brass float armature. The armature has a flat spot on top. This is where you look to make sure it’s at the 10.5mm measurement. If you need to adjust this then the little tab that the tiny wire of the needle valve is on can be bent to get the proper measurement. It can be tweaked up or down. Once at the 10.5mm mark you’re all set. I have found over the years if you’re a half millimeter off it doesn’t make a difference, Most people can’t get within that half millimeter anyway. 😏


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


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