Loosen the clamp handle on the column and use the crank handle.
Never shift gears while the spindle is spinning. Strands S68 Drill Press Manual
Use an (A-42 or equivalent). To replace: Loosen the clamp handle on the column and
The S68 typically features a Morse Taper #2 (MT2) spindle. The manual explains how to seat and remove chucks or drill bits, and how to check for runout. Strands S68 Drill Press Manual
Since Strands no longer exists as a standalone brand (absorbed into larger conglomerates in the 1980s), finding an original manual requires detective work.
Check for a bent arbor or a poorly seated Morse Taper bit. Clean the internal taper with a cloth.