WS 19: Servicing a SEIKO Chronograph 6138

To put the sub dials hands back is not as easy as it seems. The position of the hands needs to be very accurate. Also the continuous pushing of the chronograph levers (the Bergeon handsetting tool could be used for this, SEIKO probably offers a real tool for this that would make this process easier on the fingers) is quite strenuous.

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