How to Start a Cuckoo Clock, Set the Time and Put It in Beat
Cuckoo Chalet
Almost every "my cuckoo clock keeps stopping" message comes down to one thing: the clock is out of beat. Beat means that the tick and the tock are evenly spaced. A pendulum that swings a little more to one side gives an uneven "tick...tock-tock...tick" and the clock stops after a few minutes. The fix is simple and costs nothing. This guide covers starting the pendulum, setting the time, putting the clock in beat and making it run faster or slower.
Why beat matters
In a mechanical clock, the pendulum works with a small part called the anchor, which lets the gear train advance one tooth at each swing and gives the pendulum a tiny push in return. When the clock hangs slightly crooked, the anchor releases at uneven points on the left and on the right swing. The pushes are unequal, the pendulum loses energy and the clock eventually stops. When the beat is even, each swing gets the same small push and the clock can keep going for as long as the weights have power.
Think of pushing a child on a swing. A push that always lands at the right moment keeps the swing going with little effort. A push that lands early on one side and late on the other works against it.
What an even beat sounds like
An even beat has a steady rhythm, like a metronome. The sound is dry, regular and the same on both sides. It does not need to be loud. Many owners find it easier to judge with their eyes closed, standing about three feet from the clock. A phone video of the sound is also useful if you want us to listen with you.
Starting the clock
- Make sure the clock hangs on its wall, the pendulum and weights are on, and the weights are raised (see winding a cuckoo clock).
- Hold the pendulum gently to one side, about as far as it would swing, and let go.
- Listen. You should hear a steady tick-tock, with the same gap between each sound.
If the pendulum stops within a minute or two, the clock needs a beat adjustment.
How to put a cuckoo clock in beat
- Start the pendulum and listen to the rhythm for a minute. Even means "tick, tock, tick, tock". Uneven sounds like "tick-tock...tick-tock" with a limp.
- Notice the longer gap. Say aloud which of the two sounds feels late. That tells you the beat is uneven, not which way to correct it.
- Move the bottom of the clock slightly. Most clocks hang on a single screw and can pivot a little. Nudge the bottom of the case a few millimeters to one side, let go, wait ten ticks and listen again. If the rhythm gets worse, nudge it the other way. Which side is right differs from clock to clock, so there is no rule to memorize: you find it by listening. Keep the case hanging close to vertical, because makers specify an exact vertical position for the pendulum to swing properly. If your clock hangs rigidly, your instruction sheet will tell you how to adjust the leader instead.
- Repeat in very small steps. You are listening for the point where the tick and the tock sound identical. It is easy to overshoot, so move less than you think.
- Test for a day. A good beat shows over several hours, not several seconds. If the clock is still running the next morning, you are done.
Common mistakes
- Bending the pendulum leader without guidance. It can work for experienced owners, but one bend too far makes the beat worse. Try tilting the clock first.
- Judging the beat in a noisy room. Switch off the television and listen from close to the clock.
- Leaving the pendulum touching the wall or the case. Even a light touch slows it and stops the clock.
- Hanging the clock on an unstable wall. A wall that moves when people walk by can throw off the beat.
- Making a large change at once. Small steps give a better result.
Why a clock stops after a few minutes
- Out of beat. The most common cause, as above.
- The weights have touched something or hit the bottom.
- The case is not level. A clock leaning forward or back, as well as sideways, can stop.
- The hands touch each other or the glass. The minute hand should clear the hour hand.
- A transit piece is still inside. Check the case once more.
If none of these fix it, read our FAQ and send us a short video with the sound of the tick-tock. We reply within 24 to 48 hours on business days.
Setting the time
- Move the minute hand forward, clockwise, with a slow, steady motion.
- Stop at every half hour and every full hour. Let the cuckoo and the gong finish before you continue. If you rush through, the strike and the hands can fall out of step.
- When the hands show the right time, release the minute hand and stand back.
Move the minute hand forward only, unless your instruction sheet says that your clock allows turning it backward. Some makers permit it, others do not, and a backward turn can damage the strike mechanism on clocks that are not built for it. Whichever way you turn, never push the hand past the full hour or the half hour without letting the cuckoo finish. To lose a few minutes, it is safer to stop the pendulum and let the clock wait than to turn the hand back.
If the cuckoo calls the wrong hour
If the clock shows 3 o'clock but calls 5 times, the strike and the hands are out of step. Do not turn the hour hand on its own unless your instruction sheet says to. Some makers forbid it; others fit the hour hand with a light friction grip so that it can be set by itself, and the sheet will say which applies to yours. The safe fix is to move the minute hand forward through each hour and let the strike run until the call matches the dial.
Making the clock run faster or slower
The bob or disc at the bottom of the pendulum slides on a threaded rod or a metal strip, and a small nut holds its height.
- Clock runs slow: raise the bob slightly. A shorter pendulum swings faster.
- Clock runs fast: lower the bob slightly. A longer pendulum swings slower.
Make very small changes, then wait a full day before judging. If the weights are fully wound at the start and low at the end of the week, the speed can drift a little. This is normal for mechanical clocks. It is the reason people set them from time to time.
How long to wait before you judge
A clock that has just been hung, moved or wound can need a short time to settle. Give it a few hours at a steady beat before you change anything else. If you are adjusting speed, make one change per day. Writing down the time you set and the time the clock shows the next morning gives you a clear record, and it saves guessing. Mechanical clocks are not electronic: a minute of drift over a week is normal, and a quartz model will be steadier because it uses a battery and a crystal.
Next steps
Once the clock is running, learn the rhythm of daily or weekly winding. If the call is too loud for the bedroom, read how to keep a cuckoo clock quiet at night. See all cuckoo clocks in the shop.
