Toro 20692 Mower, Push or Self-Propelled

One model used was a Tecumseh TVS100-44015b which had a 25mm x 3-25/32" shaft but was installed sideways on the machine. There have been some other engines used, so we will need to know your Model and Type/Spec numbers, exposed crankshaft diameter and length, and know the orientation of your engine on the deck to help.