Ok bare with me here! there is two overflow pipes think one is a breather pipe from the bottom of the tank leading out to the side stand side! Question; the small one has a T junction and the other pipe into the T isnt connected to anything,not the one up to the tank theres another! where does it connect to?
ok here it is its the pipe on the left that T's off the other side goes up to the tank and then down to the bottom beside the side stand.
try this not sure if you meant fuel tank or overflow bottle Ronayers.com Microfiche Honda>Motorcycle>2007>CBR1000RR>FUEL TANK / FUEL PUMP (2) looks like it might connect to tank... look at A and B hoses which connect to tank that bit has a T joint
looks like the pipe from the T both of them go to the tank... part a and b, then it joins at the T to 1 pipe and goes to bottom of bike, have a look under tank and see if there a lil bit that a pipe can go on