Turn the metronome so you are looking at the back. Open up the back to expose the winding mechanism.
Wind up the metronome. Twist the wind-up mechanism to the right. Twist until there is too much resistance to continue.
Close the metronome's back door.
Adjust the metronome's BPM. Hold the arm so it is completely vertical. Position the weight on the metronome's arm so it correlates with the number on the scale (see Tips).
Start your Wittner metronome. Gently move the arm to the right with your finger until it can go no farther. Release the arm, keeping your fingers away. Watch as the arm swings left and right, making a deep "tock" sound similar to a clock.