MIYOTA - Service Manuals
3 manuals available for download
Miyota is a leading manufacturer of precision watch movements and chronograph mechanisms trusted by horologists and repair professionals worldwide. Our comprehensive collection of Miyota technical documentation includes detailed service manuals, repair guides, and workshop resources designed to support maintenance and troubleshooting of their sophisticated quartz movements. Each PDF download provides essential specifications, parts lists, and user guidance for accurate servicing and restoration. Whether you need an owner's manual for routine care or an in-depth maintenance guide for complex chronograph assemblies, our catalog delivers the professional-grade documentation required for quality horological work.
Miyota Cal.0S21 Chronograph Movement Specifications
Complete specifications and instruction manual for the Miyota caliber 0S21 quartz chronograph movement, an essential reference for watchmakers and technicians servicing this mechanism. Details include fundamental specifications—13-1/2 ligne format, 30.80mm diameter, 5.10mm height—alongside technical performance data: tuning fork crystal at 32,768Hz delivering ±20s/month accuracy and approximately 3 years of battery life on a single SR927W silver oxide cell. The manual provides step-by-step guidance for time and date setting, full chronograph operation on a 1/1 second basis with capacity up to 59 minutes 59 seconds, chronograph reset procedures, and precision hand fitting techniques. Also includes practical tachymeter explanation for speed measurement applications. An indispensable workshop resource for routine maintenance, repair, and assembly work on this popular quartz chronograph caliber.
Miyota OS22 13-1/2 Ligne Chronograph 1/20 Second Technical Data Sheet
Technical data sheet for the Miyota OS22 13-1/2 ligne quartz chronograph movement, a jewel-free analogue calibre designed for mid-range watch production. Provides complete movement specifications including diameter of Ø30.80mm and height of 5.10mm, operating at 32.768Hz tuning fork frequency. Documents the chronograph function capable of measuring elapsed time to 1/20 second resolution with total run time up to 59 minutes 59 seconds, complemented by a 120-degree retrograde display for visual time indication. Contains essential repair and service data such as movement marking identifiers, typical assembly clearances, battery specifications using SR927W silver oxide cells with approximately 2-year operational life, and tachymeter calibration reference data for speedometer functionality. Useful reference for watchmakers, technicians, and movement specialists requiring detailed calibre documentation.
Miyota OS62 1/20 Sec Chronograph Movement Technical Data
Technical data and service specifications for the Miyota Cal. OS62 13-1/2 ligne quartz chronograph movement, a compact analogue module designed for precision timekeeping with retrograde demonstration capability. This repair manual details the movement's core performance parameters: 32,768 Hz frequency, approximately 2-year battery life, Ø30.80mm diameter, and 4.13mm total height across its 0-jewel construction. The chronograph function operates on a 1/20 second basis, accumulating time up to 11 hours 59 minutes 59 seconds with an integrated 60-second retrograde demo display spanning 120 degrees of arc. Documentation covers push-button operation (A for START/STOP, B for RESET and mode switching), crown positioning, hand balance weight specifications, and critical service clearances for caseback and hand fitment. Essential reference for watchmakers and movement technicians performing maintenance, adjustment, or component replacement on this quartz chronograph calibre.