Topic: '78 CB750K carb vent hose

[Doggie]

When removing my tank I noticed a small hose from the carb that goes up to nothing, like its a vent hose. Where does it go? Is it a vent hose?
                                                   Doggie

[orkid1989]

which part does it look like on here?
http://www.cmsnl.com/honda-cb750k8-four-usa_model14397/partslist/E19.html

[toytuff]

My 77 only had the fuel line running between number one (1) and two (2) carb. The other lines were to the bottom of the float bowls.

There is a breather hose that goes to the engine from the air box and a vent hose from the tank to under the frame.

tt

[Cevan]

My CB750F1 has two vent hoses.  They are 3.5mm.  They appear to just vent to the atmosphere.

[cookindaddy]

On my CB750K8, that port was connected to a short length of rubber hose with a small filter canister at the end. Sorry that I don't have a picture. Yes, I do believe that it is a vent. But Honda provided a filter screen to keep crap from being sucked in. Not on any parts lists that I have seen.

[Doggie]

Yes, thank you, that must be what it is. Just missing the filter. Thanks, for all the help.
                                               Doggie