How do you change a diaphragm in a stethoscope?

To change a diaphragm in a stethoscope, first, ensure the stethoscope is clean and disconnected from any tubing. Gently pry off the old diaphragm using your fingers or a small tool, being careful not to damage the chest piece. Align the new diaphragm with the chest piece and press it firmly into place until it snaps securely. Finally, check for proper fit and functionality before using the stethoscope again.