I know on my bike, (2000 Road Star Silverado), it has a fuel tank breather hose. I believe it is designed to let the expansion on the gas to leave the tank so it does not explode. Looking at my manual, it looks like it follows the backbone of the frame & the back side of the engine, exiting near the kickstand hinge.
No matter what you ride. Just ride!
Last edited by Scrumdown; 06-04-2018 at 03:38 PM.