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Have a look at this discussion where I show what I use. -
Hello fellow watchmakers, I have a question for all of you, especially those who regularly work with the Sellita SW200-1 movement. At my workplace, we mostly handle watches with the SW200-1. As many of you might already know, this movement has a known issue with the ratchet wheel teeth breaking. However, recently, I've observed a noticeable increase in problems like: More frequent ratchet wheel teeth breakage Screws getting loose and falling off Sudden drops in amplitude And other irregular behaviors So here’s my main question: Before doing the final assembly of an SW200-1, what are the mandatory checks I should perform to ensure proper functioning and avoid post-service failures? For example, I already check: Ratchet wheel teeth condition Canon pinion friction Accuracy and amplitude Screw tightness Jewels condition But I’d love to hear from all of you — what other important things do you check during assembly? Any tips, tricks, or personal checklist items would be extremely helpful for me and ot hers working on this movement. -
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