This is how to disassemble and rekey a Sargent Knob. This model is older. Not sure what changes were made after this model as I don’t see many Sargent knobs in my area. They’re decent knobs though. Hope this helps you. Any questions let me know. Thanks for watching. Here’s link to directions from Assaabloy https://content.assaabloyusa.com/doc/...

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