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Dismantle and brush the burrs: 1Zpresso J-Max

Before you start

Tools
soft brush, air blower, 6 mm hex key (some crank handles only)
Supplies
None listed

Warnings

Steps

  1. Take off the crank handle and the catch cup.

    From the manual: “Remove the crank handle and the catch-cup.”

  2. Turn the adjustment dial clockwise by about two rotations.

    From the manual: “Turn the adjustment dial ring clockwise by around two rotations”

  3. Holding the burr up from below, unscrew the knurled thumb nut counterclockwise and remove it.

    From the manual: “remove the knurled thumb nut counter-clockwise while pressing the burr.”

  4. Lift out the upper bearing cap and the upper bearing.

    From the manual: “Remove the upper bearing cap and upper bearing.”

  5. Take out the burr with its central shaft, then the spring and the lower bearing cap.

    From the manual: “Remove the burr and central shaft, spring and lower bearing cap.”

  6. Only now unscrew the burr ring unit by turning it forward; it has a reverse thread.

    From the manual: “Turn the burr ring unit forward (reverse threads).”

  7. Clean the parts with a brush and an air blower, never with water.

    From the manual: “Cleaning with a brush and blower is recommended.”

  8. On a fixed crank handle, unscrew the PC lid counterclockwise (some need a 6 mm hex key), pull off the wooden knob and brush both clean. Optional Only when: fixed (non-folding) crank handle

    From the manual: “Take out the pc lid by turn counter-clockwise throughout cleaning.”

  9. Screw the burr ring unit back by turning it backward until it is at its tightest.

    From the manual: “Turn the burr ring unit backward (reverse threads) to the tightest position.”

  10. Line #0 up with the scale mark, with the dial ring's lower edge touching the first tier of the mark.

    From the manual: “Align the #0 with the scale mark and the bottom edge of the adjustment dial ring touches the first tier”

  11. Refit in order: lower bearing cap with its raised edge up, then spring, then shaft and burr.

    From the manual: “lower bearing cap (the raised edge side facing upward), spring, shaft and burr.”

  12. Drop the upper bearing back in from the top.

    From the manual: “Put the upper bearing back from the top.”

  13. Holding the burr up, refit the upper bearing cap with the concave dots up and its U-shaped hole over the shaft.

    From the manual: “The side with concave dots faces upward, and the U-shaped hole fits the shaft properly.”

  14. Keep pressing the burr up and tighten the knurled thumb nut; this sets the calibration.

    From the manual: “Tighten the knurled thumb nut to calibrate the grinder while pressing the burr from the bottom.”

  15. Check zero: turn the dial counterclockwise to where resistance starts and the handle no longer spins freely.

    From the manual: “Turn the adjustment dial ring counter-clockwise all the way to the starting point where the resistance starts”

Sources

Researched on .

Published: the sentence is on the maker’s own page or in the maker’s own document.

Applies to