

The springs I use are from the hardware store and now cost $.75 and are similar enough to work well. The springs cannot be purchased from manufacturer, only the block assemblys. There are a total of 10 springs in two block assemblies in the trans.
CRAFTSMAN PIVOT DRIVER MANUAL
Once again I drained out the fluid from an access hole that I made earlier, disassembled the trans, (see owners manual diagrams), and found another broken spring in the Block Assembly.

It was making a snapping noise with severly reduced speed.
CRAFTSMAN PIVOT DRIVER UPDATE
Good luck! MrFixAll Update 4/30/08, I just finished repairing my HYDRO-GEAR trans again. I recently had another apart that only needed a 65 cent spring to get it going, but again the hardest part was getting the air out of the system.

Also pushed the tractor while the tranny was engaged until resistance was felt and after some time the air was out and the tranny works like new now. I did as instructed in the owners manual several times, waiting about 20 minutes between trials. The hardest part was bleeding out the air from the system. I filled the recovery tank about 1/3 full. I emptied the recovery tank and refilled the trans with Carquest Premium Tractor Fluid. I drilled and tapped a #10 hole in the right rear bottom/side of the case to drain out the old fluid and put in a short machine screw to plug the hole. Here is what I did to fix my Craftsman mower tranny.
