Seiko 4R Series Parts List/Technical Manual page 11

TECHNICAL GUIDE
Cal. 4R71A
6. Accuracy adjustment
Regulator
Regulator pin
Stud support
Note:
・Regulator ... Time adjustment ・Stud support ... Beat error adjustment
(+) side
(-) side
・Regulator pin ... Gap adjustment of Balance spring and Regulator pin
Counterclockwise rotation No clockwise rotation
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