I am rebuilding this carb and I took all the jets and internal parts to soak clean. The main nozzle has very small holes in it and need to be aimed a certain way when I put it back together. I didn't pay attention to the way it was aimed before I removed it. Can anyone out there tell me which way to aim these holes? Thank you for the help. Big Nick

 

If you are discussing the emulsion tube holes, don't worry about them. They can go in in any position.

 

this is the main nozzle,maybe the emulsion tube. Im not sure.It fits in carb where its showing in pic.
A
re you saying the tube has no particular direction to be installed? Thanks for the help.Big Nick

 

Yes.. That's the emulsion tube.. Don't worry about orientation of the holes.

 

Search the forums for here. How To : Tuning a Keihin Butterfly Carb


Chengdave did the best write up on the web on tuning these about 11 years ago. I've used it several times.

 

I think you're supposed to point to...
43° 2' 45.9485" N, 87° 57' 35.9503" W

 

Don't misplace the little black rubber plug. Just a heads up as they can dry out and fall out into the bowl also. Number 27 in link below...Those carbs love a zippers thunderjet third fuel circuit added to cover or supplement an inherent mid range lean condition.

http://demonscy.ipower.com/manuals/x...rb_76-78_1.jpg

 

This o ring looks like it might be for some adjusting screw or something. Came in this small separate bag with no info on it.Way smaller than those 2 float bowl o rings.. Have yall got any idea what it maybe for? The rebuild kit comes from James Gaskets, Thanks for all your help.B Nick

 

The oring on the idle mix adjustment screw would be my guess. YD

 

Yankee Dog is correct on O-ring
Some people miss this O-ring and their carb job goes to hell
Be sure to remove the old one and a flat washer and install in correct order