To remove heavily calcified and stuck faucet handles, start by shutting off the hot and cold water supply valves underneath the sink. Remove the handle screw and soak the stuck handle area by wrapping it in a rag soaked in warm white vinegar for 30 minutes to dissolve the hard water crust. Once the calcium softens, gently wiggle and pull the handle straight off the brass stem. Callout type="warning" title="Hygiene Warning": Shut off the water supply valves under the sink before beginning repairs. Verification: Inspect the exposed brass stem to ensure all white mineral crust has been removed.
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