Sage Swollen or Incorrect Group Head Gasket

Portafilter is difficult to insert or remove; handle sits too far to the left

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Possible Causes

New gasket not bedded in, Incorrect thickness gasket installed, Coffee residue buildup, Warped portafilter ears

How to Fix / Troubleshooting

Safety: Allow the group head to cool before working.

  • Clean gasket area: Remove the shower screen and clean the gasket groove thoroughly.
  • Check gasket type: Ensure the installed group head gasket is the correct part number and thickness for your Sage model.
  • Bed in new gasket: After installing a new gasket, lock the portafilter in and run a few blank shots to help it seat.
  • Inspect portafilter: Replace the portafilter if the ears are bent or deformed.
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Repair Difficulty

Easy 2/5

Required Part

Group Head Seal / Gasket
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