To set this clock, turn the time adjust wheel on the back to set the time of day.
To sync the chimes to the proper hour, press either the AM or PM button the number of times+1 of the hour displayed on the front dial.
(if time is 8:20pm, press the PM button 9 times.)
It will sync the next time the minute hand passes the top of the hour. However do not try this if the minute hand is between 45min past the hour and top of the hour. After the first sync the quarter hour chimes will sound.
This clock will silence the chimes late at night, hence the reason for the AM/PM buttons.
I learned this by just expermenting with one that I fixed for my friend. I could not find a instruction shhet anyplace for this clock.
Chuck
January 2010