I have Model Number 113.299510 purchased new in November 1997. The arbor isn't the same diameter the blade fits right next to the flange but the diameter is smaller from there on out to the end of the shaft.
Does anyone know if Sears makes a shaft replacement that is the same size for the full length of the shaft?
If not I have a machine shop close by that won't charge me a whole lot to make another shaft that is the right diameter & 3/8" longer so I can put a full dado set on. I'll need to get another nut from a saw that has the same diameter shaft from end to end.