Extra hose on top of carbs

Posted by jd on Oct 28, 2010; 5:20am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Extra-hose-on-top-of-carbs-tp1784491.html

Just bought a CB750K and found a hose going into the top of the carb bank but not attached to anything on the other end. Could anybody help me with what this goes to?