Rotax Max carburetor assembly

we have an in depth assembly of the ‪@RotaxKarting‬ carburetor
Part numbers we will be using
150 needle and seat 261880
Float height gauge 277400
Complete gasket set 293834
www.odkarts.co.

[@stephrace]

Great video ! THANKS Small question: I manage to do a little bit and then I have to open the choke a little and then close it, to be able to do another little bit. I don't understand, the engine is jamming and I'm still playing with the screws. My air screw is about 1/4 turn and it doesn't work otherwise. Could it be the needle and how do I know that it is no longer good? I demonstrated the entire carburetor the other day, checked everything and everything looked and very clean.