Gear Box assy size 60 threaded clutch shaft 

Replacement for:

CSW-200 operators with serial numbers between 101496-20456  to  091597-41084

CSW-200-DM units with serial numbers between 101496-20456  to  053197-37476

Csw-200 1 HP units with serial numbers between 101496-20456  to  022996-24137
If your unit does not fall within these serial numbers look at alternate gearboxes Q050 or Q210