Recorders and Players
Recorder Player Problems? Ask a Technician for Answers ASAP
Hi. This is most likely a problem with the belts You will need to check inside, they might be loose, broken or melted (sometime those belt just decompose into a black goo).
I was not able to find a part number for them, if you can find one not too damaged, you can mesure one and order close enough replacement from place like: http://www.studiosoundelectronics.com/cassette.htm