Seiko Cal. 8Y21A Parts Catalogue and Technical Guide
Parts catalogue and technical guide for the Seiko Cal. 8Y21A step motor movement. Includes detailed specifications, disassembly and reassembly procedures, component identification, circuit block structure, and valve checking procedures. Contains parts lists with numbered references, movement diagrams, and lubrication specifications.
Documentation must be downloaded on a computer (PC, Mac, or Linux).
Do not use a smartphone or tablet to download documentation; they generally lack sufficient memory capacity to handle large files, and few users know how to locate the download folder on these devices.
Once downloaded, you can use it right away and even print the pages you need, or use your smartphone in photo mode to translate into the language of your choice: Google Translate
Document Details
- Format
- Pages
- 5
- Size
- 157.3 KB
- Category
- Horlogerie