2005 rancher 400 carb problems

Hi am new here and see that this is a good forum 🙂 anyways i got a 2005 rancher that i picked up for 500 and on the carb there is a hose that goes around it and it has another connected to it. it wasnt connected before and am wondering if it is possible to get a diagram or a photo of another one from another owner. thanks in advance