Topic: 1977 CB750A carb question

[iceman321]

Hello guys i am rebiulding 1977 750A bought the bike with no carb, I now have one I have what is prob stupid Q but cannot find answer in service manual.
where the Soliniod valve is located on carb  there are 3 fitting coming out of carb. The angled one goes toline that connects to Top of Solenoid valve. Of the other 2 one must go to the Fuel tank(the larger of the two i think) can anyone tell me where the 3rd r fitting is connected to or is it a breather . Thx in advance  david

[raymond10078]

Look here:

http://forums.sohc4.net/index.php?topic=113828.0

[iceman321]

 kandrtech thx for answering so fast. looked at link you sent and am still in the dark.
I have attached pic with arrow pointing to port that i am unsure of

ths david

[raymond10078]

Sorry - I thought this was a solenoid hose question.

The three hose connections are (from front to back - or from head towards exhaust) are: solenoid connection; carb vent; and fuel supply.

I believe you are pointing to the carb vent - and not the fuel line.  A hose should be connected -about 5 inches long - that runs up to (and under) the gas tank - and is open at that end. 

http://forums.sohc4.net/index.php?topic=81329.0

http://forums.sohc4.net/index.php?topic=100539.0