Craftsman 113.23615 Owner's Manual page 9

2_Use a small square to set the table at 90" to the blade.
If there is too much space between the square and the
blade, the table must be adjusted.
3. When the space between the square and the blade is
minimal, tighten the bevel lock knob, The table should
now be approximately 90 ° to the blade,
.......
4. Loosen the screw holding the bevel scale pointer and
adjust to 0 °. Tighten screw.
Remember, the bevel scale is a convenient guide but
should not be relied upon for precision,
Make practice cuts in scrap wood to determine if your
angle settings are correct. Adjust the table as required.
Bevel
Pointer