[nubs]

That canister is just to absorber excess fuel fumes and recycle them back into the engine. The hose directly on the bottom is just a vent. The should be a little plastic fitting on the end of it that gets plugged into a hole in the frame right next to it. If the fitting is missing it should not hurt anything, I guess it just goes into the frame so incase any raw gas would would come out it would not go into the engine compartment.