thanks spaceclam, this has been very informative reading the details on the ys fueling system, i have much more knowledge about this system now, i didnt know it was so different form other 4strokes, much less so different from the 2strokes. I dont have a ys at this time, my first and only 4stroke is the saito 100, and needed to know how to run the fuel lines and set it up in the cowl etc. but have found much about this from the search as richardl suggested, i thank you for the info, and do appreciate the time to answer my questions. Thanks alot, Dennis.

my appologies. i said takethe fuel out of the little line that comes of the tee. i meant release the pressure so you can fuel/unfuel.