Another stupid carb question

[SanDiegoMike]

In trying to figure out why #4 is leaking since I did what I initially thought was a very careful and thorough cleaning, I discovered that I did NOT remove the emulsion tubes. I thought that they were somethig different...don't ask me why. I did a search on them in hopes to find out how they are removed, but came up empty. Can you please enlighten me and let me know what else I may be looking for when they are removed (o-rings, more passages to shoot carb cleaner through, etc.) Sorry to be such a PITA, but I just want my bike to run better and hopefully get better gas mileage than the 25mpg I was averaging. TheWiz and Soccer4m have offered their assistance and tools...I just want to have everything I can possibly do done before I take them up on their generous offers.
Prom- I will do your upside down leak test once I get EVERYTHING cleaned.
Pastor-I will do the hanging float height check prior to putting the bowls back on.
Thanks to all for your help...this site is great!

[John]

MIke, to remove the emulsion tubes (nozzles, in Yamaspeak) you have to remove the slides and diaphrams to allow the nozzles to be pushed up to the top of the carb. The best way I have found to remove them is, once you have the main jet loosened a couple of turns, give the screwdriver a good sharp whack with your hand to break the nozzle loose from the crud that surrounds it. Once loose, remove the jet, and use a small wooden dowel or even a pencil to push it out. Don't use anything metal, that will damage the threads in the end of it. Mind the location of the alignment notch on the nozzle. Once out, clean inside the nozzle and clear out the small holes in the side of the nozzle. Use plenty of carb spray to clear the air passages that lead to the chamber the nozzles sits in. Those would be found in the inlet of the carb. That should make a big difference, if that is the problem.

[skids]

Keep track of where they came from. There may be different numbers on the middle two than the outer two.