Moccamaster Stuck or Misaligned Drip-Stop Mechanism

Drip-stop valve does not release coffee into carafe (coffee backs up in basket)

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Possible Causes

Coffee residue buildup on drip-stop valve, Misaligned carafe lid not pressing valve, Broken drip-stop spring, Warped brew basket

How to Fix / Troubleshooting

Safety: Switch off and unplug the unit. Allow the brew basket to cool before opening to avoid burns.

  • Release backed-up coffee: Carefully remove the brew basket and place it over a sink. Manually lift or press the drip-stop valve to drain the coffee.
  • Clean the mechanism: Disassemble the drip-stop (if possible) and soak in warm soapy water. Use a small brush to remove coffee oils and residue.
  • Check spring action: Ensure the valve returns smoothly when pressed and released. If the spring is broken or missing, replace the drip-stop assembly.
  • Verify carafe alignment: Make sure the carafe and lid are fully inserted so the lid actuator properly opens the drip-stop during brewing.
  • Replace warped parts: If the basket is warped and prevents proper sealing or movement, replace the brew basket.
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Repair Difficulty

Very Easy 1/5

Required Part

Drip-Stop Valve Assembly
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