Calibre Y480B Parts List
Parts list for the Seiko Calibre Y480B quartz watch movement, providing a complete technical breakdown of every component, subassembly, and fastener. This document catalogs all numbered part references essential for disassembly, repair, reassembly, and parts sourcing, including the auxiliary plate, train wheel bridge, center wheel and pinion units, hour wheel mechanism, winding stem, circuit block screws, friction washers, switch lever, step rotor jewels, battery contacts, and all associated hardware. The list details three center wheel and pinion variant configurations (types a, b, and c) so you can identify and source the correct assembly for your specific movement, along with winding stem options and train wheel bridge specifications for Pulsar-branded models. Battery compatibility is documented for both Maxell SR621SW and Seiko SG621SW cells. Ideal for watchmakers, technicians, and experienced hobbyists performing movement service, replacement parts identification, or restoration work on Seiko Y480B equipped timepieces.
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