Artic Cat Fusion 900 How Do You Change The Belt On A 2006 Artic Cat Quad?

How do you change the belt on a 2006 artic cat quad? - artic cat fusion 900

I have a friend who was one in 2006 Artic Cat TBX 400th He wondered how you change the belt on him. You need a special tool? Is it possible to obtain a diagram of shopping with the service manual for it? Thanks for the help. Bob