How do you replace presser bar lifter in your sewing machine?

To replace the presser bar lifter in your sewing machine, first, unplug the machine and remove the presser foot and needle for safety. Then, locate the presser bar and unscrew the retaining screw to detach it from the machine. Carefully remove the old lifter and replace it with the new one, ensuring it is properly aligned, and reattach the screw. Finally, reassemble any parts you removed and test the functionality of the new lifter.