I have someone here helping me get this 90's model started. He called the 800 number and for this 4.5 HP thrower, he gave him the belt number (7540101A changed to 9540101A). We picked up that belt size and for one, it seems too big. I'm wondering though, if that V-belt next to the diagram is the one and if that is different model machine. The nutshell is it's still hard to see where the exact position for the belt is. Can you help us? I have 7 kids and don't have a lot of time to figure out the mechanics in it's totality. Thanks!