To clean a coffee maker with vinegar, follow these steps:

1. Empty the coffee carafe and remove the filter.
2. Fill the coffee maker's water reservoir with a mixture of half white vinegar and half water.
3. Run a brewing cycle as if making coffee (if your machine has a clean function, use that).
4. After the cycle finishes, let the vinegar mixture sit in the machine for 15 to 30 minutes to dissolve mineral deposits.
5. Discard the vinegar mixture and rinse the carafe and filter.
6. Run two to three more brewing cycles with fresh water only to rinse out any vinegar residue.
7. After the final rinse, your coffee maker will be clean and ready for use.

This method helps dissolve calcium deposits and buildup, improving the machine’s performance and coffee flavor. It's recommended to do this monthly or as needed based on use and water hardness.