This little stainless steel screw holds the shower screen in place. Easy to lose and hard to find. Worth having some spare.
Where the portafilter lock into the group head of your machine there is a rubber gasket to create seal. These need to be replaced every 6 months. T...
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The shower screen serves two purposes. Stop the coffee being sucked back up into your machine. Evenly disperse the water over the bed of coffee. ...
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