[Motofool]

Originally Posted by juliusmichaelhonrada

........ But i think it wont work in the ninja because the petcock is Vacuum operated , and those carbs have no vacuum line inlet

Both things are a separate thing.

Vacuum operated petcocks stop fuel from spilling in an accident.

Constant velocity (CV) carburetors need a vacuum signal to properly wok, but not a slide type carburetor.

Any slide carb can perfectly work with a vacuum operated petcock.

Please, read about this here:
http://www.dansmc.com/mc_repaircourse.htm (60 to 78)

http://www.dansmc.com/cv_carb.htm