Ok, so on my 96 F3 there are two hoses on the bottom of the tank, one which is the bigger of the two is the main gas line, but there is a smaller one next to it that isnt connected to anything but looks like it should be. please help. andrew

 

can you post a pic of it?

i'm thinking your referring to either a drain tube from the filler area, or maybe a tank vent.
blow into it and see where it goes.

and...welcome to the forum!

 

you have the petcock hose, that goes to your fuel pump, the other 2 hoses, small and big are vent and breather tubes, they go in the bracket that the idle adjustment **** bolts to. you'll see the indentations for them. i don't have hoses on mine..

 

The other two are the breather tube and the tank overflow tube, just direct them outside of your fairing.

 

the larger of the two is the overflow, the smaller is the breather hose.

 

Thank you guys so much, I just bought my CBR last week so im just trying to learn more about it. I just got done replacing the regulator rectifier and plug by myself. So the smaller hose doesnt connect to anything? because it looks swelled like it supposed to be connected to something?

 

Smaller one goes to small nipple on the underside of the tank, large hose goes to large nipple under the tank.
TC

 

I know one end goes to the nipple under the tank. But just to be sure the other end doesnt connect to anything?

 

Question, 97 CBR F3 Tank hoses, the peck **** does not have the vacuume connection, I have 1 hose going to carbs (Gas line) 1 small hose (Short Vent hose ?) and 1 long hose I assume is the over flow. Problem is I have the vacuume nipple under #2 cylinder that has nothing going to it, I feel the vacuume when it is idling. Do I just put a plug over it ??? Im dealing with an idle issue, great at strt up under choke, dies immidiatey if i turn choke off or give it any gas. I have read in hear about cleaning the jets which I was going to do when I found the open vacumme nipple under #2 Cylinder that was originally for the old style peck ****. The tank that is on it has only 2 hoses located behind the peckcock.... any suggestions on what to do about open #2 Cyl vacuume ?????