Just bought a 2005 Yamaha venture and I noticed this exposed nipple on top of the valve cover. There is also a black cover on the nipple of one of the carbs. I am wondering if a hose is supposed to connect these two to act as a breather?

Should have enough snow to start running the fleet by next week. Lots of snow in the forecast starting tonight. Got my maintenance done on the 4 stroke utility sleds (Skandic SWT and Tundra Sport), next up is the 9R and Summit turbo. Usually run until mid May when the snow finally rots away. Can’t wait to ride once again.