It is most likely the main drive mechanism gone out. Toro bought out the maker of the tillers (GIS model numbers indicate Gilson mfg.) and are no longer available. i have one that I have been looking for the belt and how to put it on for a long time and just cannot find anything. i also need some parts, so if anyone knows where to get the belt pulleys, please let me know.
billranch99
at
a o l . c o m
Bill - Small Engine Repair, March 2011