Training Wheel Hero
Join Date: Feb 2009
Location: Iron Mountain, MI
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One hose is a coolant overflow tube, one is a crankcase ventilation tube (heat will expell tiny amounts of oil) don't worry about it, and the other is the fuel tank vent tube.
I had an issue once with these tubes that I was un-aware of. I was doing a trackday and had full race bodywork on the bike. Meaning that the underbelly was toatally enclosed. Well, the night befor the trackday, it rained like Pigs and rabbits. The underbelly had about three inches of water sitting there (did not have a drain hole/plug installe yet). When I started the bike, it ran fine for about 5 seconds then died. What I didn't know was, when the fuel pump primes and that little vent tube from the tank was submerged in the water was bad ju-ju. When the pump primed (creating a vacuum) it sucked up a bunch of water and ceremoniously introduced it into the gas tank....water in fuel.....very bad. Anyway, I was up 'til 2am trying to drain all the gas out of the tank and lines. But the spark plugs were soaked with water droplets and would not fire. I had to wait until the local bike shop opened to get new plugs to install. I missed the first hour of the track day trying to get the bike to run.
Lesson learned on my part....$67 for 4 plugs....what a day.