Based on the provided reference (a brief YouTube video snippet), cleaning a sink drain basin involves the following steps:
- Tighten the Nut: Ensure the nut connecting the drain components is securely tightened.
- Test for Leaks: Run water into the sink to check for any leaks around the drain basin and connections.
- Ensure Tightness: If leaks are present, tighten the nut further until the leaks stop.
Keep in mind that the video excerpt is very short. A complete cleaning process usually involves removing debris and buildup within the drain assembly. It might require disassembling the drain (removing the nut mentioned above), cleaning each part separately, and reassembling it.