How do you change a light bulb in a singer 247?

To change a light bulb in a Singer 247 sewing machine, first, ensure the machine is unplugged for safety. Locate the light cover, usually at the top of the machine, and carefully remove it by unscrewing or sliding it off. Take out the old bulb by gently twisting it counterclockwise, then insert the new bulb by twisting it clockwise until secure. Finally, replace the light cover and plug the machine back in to test the new bulb.