crankcase breather

Posted by jamman18 on Sep 26, 2012; 3:49pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/crankcase-breather-tp4029872.html

Just wondering what the crankcase breather tube's purpose is.....in other words, mine came off and I want to know what happens if I don't put it back on?  I'm going to regardless, but just wondering as I can't find much info on it.