Motorcycle Repair: 2001 honda xr80 carb, honda xr80, needle jet

Question
how many overflow tubes r there i have one that the bottom which is leaking gas like crazy then i have anther one on top not attached to anything  but bike still runs   help  me

Answer
every carb has one or two overflow tubes which can have fuel flowing out of them ieven if the bike appears to be working OK. Theither there is dirt in the needle jet (fuel supply) or the float is stuck.  Either way you will have to take off and clean the carb.
Good luck,  Jan