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OPERATION MANUAL
【4R71A Operation Manual】
1. How to set the time
1) Pull out the crown to the first click when the secondhand is at the 12 o'clock position.
(The secondhand stops on the spot.)
2) Turn the crown to set the hour and minute handsto the correct time.
* Do not set the date between 9:00 p.m. and 4:00 a.m. If you do,
the datemay not change properly / it may cause a malfunction.
3) Push the crown back in to the normal position inaccordance with a time signal.
2. How to wind up the mainspring
a) Manual winding ... Slowly turn the crown clockwise at normal position.
* If you wind by turning the ratchet wheel screw 8 times, it will start to move naturally after shaking slightly.
b) Winding up with the winding machine.
Full wind up conditions are as follows:
・Rotary speed : 30 rpm
・Operating time : 60 minutes
14/16
Cal. 4R71A
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