: Bring your own fabric, needles, and thread to test straight, zigzag, and buttonhole stitches. Check the tension on the back of the fabric for consistency.
: Ensure the power cord, foot pedal, and original bobbin case are included. Missing proprietary parts can be difficult and costly to replace.
: Manually turn the handwheel toward you. It should move smoothly without "hard spots," grinding, or excessive vibration.