Here is the Illustrated Parts List:
http://www.motoculture-jean.fr/upload/pdf/FS96.pdf

Here is a brief specification:
http://www.tractorbluebook.com/Equipment-Blue-Book/Edgers-Trimmers/Stihl/FS-96

In essence, 1987 introduction, 1.5 hp, 15.4 pounds, 32 cc.