2.Open the rear of the quartz watch using a watchmaker's case opener or a small screwdriver of between 0.8 mm and 1.0 mm in size. Take extreme care when removing the back plate to avoid scratches. Remove the old battery and dispose of it responsibly. Add a replacement battery and check the face of the quartz watch to ensure that the second hand is moving.
3.Leave the back plate off and look to the lefthand inner side of the watch mechanism to locate the stem. Use one of the small screwdrivers to push gently down on the spring to release the stem mechanism and remove it completely. Insert the new stem and spring into position and push into place firmly. Ensure that the new stem is able to move the hour and minute hands when it is pulled into an extended position.
4.Take a can of compressed air and lightly blow out the inside of the quartz watch to remove any traces of dust or debris. Place the back plate into position and secure it by snapping into place or reinserting the removed screws.
5.Finish repairs to the quartz watch by removing the strap pins using the small screwdriver. Dispose of the old strap and place the strap pins into each end of the new strap. Attach the new strap to the body of the watch, using the small screwdriver to manipulate the pins into the correct position. The quartz watch should now work and is ready to wear.
