Zero Positioning Of Chronograph Hands (After Replacing The Battery) - Citizen F50 Series Instruction Manual

6. Zero Positioning of Chronograph Hands
When resetting the chronograph after replacing the battery, if the chronograph
second hand does not return to the 0 seconds position or if the chronograph
second hand has shifted out of position due to a strong impact, perform zero
positioning of the chronograph hands according to the procedure described
below.
Chronograph minute hand
10
(After Replacing the Battery)
8
Chronograph second hand
Button (A)
Time correction
position
Button (B)