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This type of clock will be able to keep time within 4 minutes per week.You will need to do the final regulation once the clock is in its permanent location to achieve this accuracy.The left square winds the strike mainspring and, the right square winds the time mainspring.Wind the clock once each day, preferably at about the same time each day.(The strike train makes a noise called the warning.) Move the minute hand backwards to 15 minutes before the hour. Repeat until the number of hours struck is one less than the hour that the hour hand points to. Make sure clock is on a stable surface and does not rock.If the strike gets out of synchronization with the hands, wind up the strike spring (left winding square), then proceed as follows. When striking stops, push up (or pull down on some clocks) the little wire hanging beneath the dial and let the clock strike. If necessary shim one or two corners with cardboard (for a shelf or mantel clock), or move bottom of clock to left or right (for a wall clock).Move the bottom of the case to the left or right until ticking is even (or if there is a beat scale beneath the pendulum, move the case so the pendulum points to zero when at rest). Wind the clock once per week, preferably on the same day each week.Turn the key with a smooth motion, stopping when the spring is tight (approximately 7 turns after one week of running).
The strike synchronization instructions apply to count wheel striking, which is not self-synchronizing. Open the back door, hang the pendulum on the hook, and close the door.Turn the key with a smooth motion, stopping when the spring is tight.