Fixing a Sony Super Betamax SL-S600

[thezman]

Hey, new to the forum. Was glad to find it. I'm fixing a Sony Super Betamax SL-S600 for a friend. He described the problem as the deck "eating the tape." I got it taken apart and discovered the problem was that the tape spools don't move. I followed the orange belt back to a disc under the motor (1st pic.) Problem is, I can't figure out how it connects to the motor or what needs to be glued/replaced. I see when the tape is stretched out that a rubber roller (2nd pic, figure 2) makes contact with the spindle (2nd pic, figure 1) coming up from the aforementioned disc.

My question is... what's supposed to be driving this disc that drives the tape spindles?