Moen garbage disposal leaks from the top where it meets the sink drain

Safety first: Unplug the disposal or turn off the breaker before loosening the mounting assembly.

• Verify leak location:
  • Look under the sink while running water (disposal off).
  • If water appears at the top of the disposal where it meets the sink, the sink flange seal is leaking.
• Remove the disposal:
  • Support the unit from below.
  • Rotate the mounting ring counterclockwise to release the disposal from the Moen mounting assembly.
• Reseal the sink flange:
  • From above, remove the sink flange and old plumber's putty.
  • Clean the sink opening thoroughly.
  • Apply a fresh, even bead of plumber's putty under the sink flange lip.
  • Reinsert the flange and reassemble the mounting hardware from below, tightening evenly.
• Reinstall disposal:
  • Hang the disposal on the mounting assembly and rotate the mounting ring clockwise until fully locked.
  • Reconnect discharge and dishwasher hose.
  • Run water and check for leaks.