Hattori Seiko Cal. 8M25A 8M25B Parts Catalogue
Hattori Seiko Cal. 8M25A and 8M25B quartz movement parts catalogue and technical service manual. Provides complete specifications for both calibers, exploded component diagrams, step-by-step disassembly and reassembly procedures, and lubrication guidelines for proper maintenance. Covers detailed technical remarks on the mode indicator design, circuit block architecture, battery installation protocols, and functional elements specific to each caliber. Highlights the key engineering differences between the 8M25A and 8M25B, including distinct mode indicator configurations and switch spring specifications. An essential repair and maintenance reference for watchmakers and technicians servicing these Seiko quartz movements.
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Document Details
- Format
- Pages
- 14
- Size
- 357.0 KB
- Category
- Watchmaking