Re: motorbike newbie
I'll bet they are both atmospheric vents, or one is an overflow... same thing, just about.
Is that the air cleaner that came with the engine?
...there may be a pair of holes in a stock air cleaner those hoses run into???
May be best to take the carb off and drop the float bowl and have a look inside to see if they terminate in there somewhere visible???
at least these things are ez to work on! :-)