I'm a new (again) owner of a Walkman. This time it's a WM-11. Purchased a reported working one and one that "needs repair". I figure between the two I can get one good functioning unit. I owned several portable cassette players back in the day. I'm not sure how many were Sony. Though I am pretty sure I owned a Sports at one point, but didn't pay attention to those details back then. This forum comes up a bunch in my research, looking forward to gaining knowledge from the great resources here. Thanks!
Welcome to S2G This model is a good one to to practice on it. Probably you need to replace its belt. I tried to upload the service manual but it is too big to be uploaded here: So see these pictures and you can find the most important parts/ disassembly process: