ShotPulled › Gear › Burr clean
Dismantle and brush the burrs: 1Zpresso J-Ultra
Before you start
- Tools
- soft brush, air blower
- Supplies
- None listed
Warnings
- Never wash the grinder or clean it with water. Source: 1Zpresso User Manual – J-Ultra (web manual)
- Leave the burr ring unit screwed in until the burr and shaft are out. Source: 1Zpresso User Manual – J-Ultra (web manual)
- Leave the adjustment dial ring on the grinder. Source: 1Zpresso User Manual – J-Ultra (web manual)
- Go no further than these steps: the shaft and burr, the burr ring unit and the bearings stay assembled. Source: 1Zpresso User Manual – J-Ultra (web manual)
- Wipe with nothing but water or alcohol; no other solvents. Source: 1Zpresso User Manual – J-Ultra (web manual)
- On a foldable handle, taking any part of it apart voids the handle's warranty. Source: 1Zpresso User Manual – J-Ultra (web manual)
Steps
- Turn the adjustment dial clockwise by about two rotations.
From the manual: “Turn the adjustment dial ring clockwise by around two rotations”
- 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.”
- Lift out the upper bearing cap and the upper bearing.
From the manual: “Remove the upper bearing cap and upper bearing.”
- 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.”
- 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).”
- Clean the parts with a brush and an air blower, never with water.
From the manual: “Cleaning with a brush and blower is recommended.”
- 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.”
- 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”
- 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.”
- Drop the upper bearing back in from the top.
From the manual: “Put the upper bearing back from the top.”
- 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.”
- 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.”
- 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.