Gear shift lever is loose and mower will not move. this is on a craftsman lt1000.

Trace back the linkage from the shift lever to the transaxle to see if the linkage has come apart. If it is a manual, then I know the linkage connects to the transaxle on the top, forward, left of center. There is a retaining bolt (i think bolt, been a long time) that attaches the linkage to the transaxle. If this has backed out very much the linkage is not going to shift gears on the transaxle.

I hope this helps.