cub cadet 1450 fuel problem??

I have a CUB CADET 1450 and last summer I had it worked on and when I got it home and turned on the gas now the gas just runs out of the carburetor!



(I know it's not the float sticking in the carburetor.)



I went back and asked what he did he told me he had to remove something from the fuel tank.



Will someone please tell me what part I need to buy to fix this problem?





Thanks,

B.