Cb350f Fuel Line Routing

[drh994]

Alright, I have my carbs ready to be reinstalled onto the bike. The problem is, the fuel lines were never attached to the tank when I bought the bike so I'm not sure how they go. I know the four lines on the float bowls are spill over lines. The question is, where do the other three lines go that are on top? One attaches near the pod filter intakes in the center of the carburetors. I don't know where that one goes. Is that one a spill over? I guess that would make sense. Then there are two that go into the sliders which seem like they should go to the gas tank. The problem I'm having with that is, on my petcock there's only one barb to attach a fuel line. I looked it over more than once and I can't seem to find a spot on the tank for a second fuel line. Does that mean I need to get a tee and connect the gas line that way? Thanks for the help guys. I'd be lost without the help on here.

 

[Big R]

Your right about the 4 on bottom- those are the float overflows. The 3 that are left........only 1 should go up to the tank. The other 2 are breather/ vacuum lines. They allow the pressure to be equal when gas gets sucked out.

Can anybody else confirm me?

 

[paleale420]

I just double checked my 72' CB350F, and 1 line from the carbs goes to your fuel supply, and the other two are breather lines.

 

[drh994]

So the two breather tubes don't need to hook up to anything? They can just rest like the four floater bowl lines?

 

[Big R]

Correct. I normally just cut the hose to whatever length is needed and throw a fuel filter on it. Just so bugs and dust don't find their way up there.