Question about changing freewheel on Schwinn Le Tour
I have a 1981 Japanese 10-spd Schwinn Le Tour with a broken tooth in one of the 5 speed Shimano sprockets. I know I need to replace the whole freewheel and my chain. Does anyone know if I can replace this with any 5 speed freewheel, or are there specific ones that fit the Japanese-made Schwinns?
I saw a French-made Schwinn 5 spd freewheel on ebay, but wasn't sure if it would fit right. I've also seen a lot of Shimano FF assemblies. I'm new to bikes and bike repair, so I don't want to screw it up or order parts that don't fit. Would love to get some advice from knowledgeable folks such as yourselves.
Also, any recs on where to find what I need other than ebay? Thanks!