Broke a plastic tube joint under my tank. Not sure what it was
 

2000 CBR 600 F4
I was taking off my tank to clean my carburetor earlier today and I found a 90 degree white plastic tube... coupler I guess you could call it. It wasn't hooked in to any other hose so I guess I just assumed it was for air to get into the tank. The bike's been running fine this whole time and I don't see any hose down there that it could connect to. Does this thing connect to anything or am I good to leave it unhooked?

Can you see it on these diagrams
https://www.partzilla.com/catalog/ho...-cleaner-99-00
https://www.partzilla.com/catalog/ho...uel-tank-99-00

Yeah before posting I had a look at the second diagram and figured it was part 29 but the piece that I broke was bent at 90 degrees and not 45 which got me wondering if that's the right thing

https://cimg1.ibsrv.net/gimg/cbrforu...819bb61395.jpg
Okay nevermind that's it. What does this thing hook into? I don't see a hose for it to connect with

https://cimg9.ibsrv.net/gimg/cbrforu...5b77d5239d.jpg
Hi, was your bike a Cali bike before you got it, if so could be the remains of the evap system just left in, if you dont have the manual here's a page from it for the hoses and here you can get the manual. StephyGee.com