User Manual - J-series

J-series grinder
J-series grinder

⚠ Do not wash or soak this product for cleaning

Table of Contents

User Instructions

J-series grinder
Adjust the dial clockwise for finer grinds. Adjust the dial counter-clockwise for coarser grinds.

Adjusting the grind setting

Turn the adjustment dial clockwise to make the grinds finer and vice versa.

  1. Attach the crank handle and stop it from rotating.
  2. Turn the adjustment dial clockwise to the tightest. The number (#) marked at the dot is the starting point/zero point.
    NOTE: the number (#) might not be 0.
  3. Turn the adjustment dial counter-clockwise from the zero point to the grind setting you like.
  4. There are 10 numbers/30 clicks in a single rotation; every rotation moves the burr by 0.75mm.
  5. Grinds remaining in the grinder might make the zero points different.
  6. Kindly refer to the grind setting tutorial post for several brewing methods.

Coffee Grinding

  1. Put the coffee bean into the hopper after removing the handle. The maximum capacity is around 20g.
  2. Grind coffee beans clockwise with the handle attached.
Q2 Grinder - Pentagonal Version

Deep Cleaning Guide


Note: Do not remove the Burr Ring Holder before step 2.

J-Series grinder
  • All 1Zpresso grinders are able to be disassembled without any tools. Install and well place the crank handle and stop it from rotating and loosen the adjustment dial counter-clockwise to remove it.
J-Series grinder
  • The adjustment dial, inner burr, spring and lower bearing cap can be cleaned after the adjustment dial is removed.
J-series grinder
  • Remove the burr ring unit clockwise from the body.
  • Clean each of the parts with a brush and an air blower.


J-series grinder
  • Tighten the burr ring unit counter-clockwise to the tightest position.
J-Series grinder
  • Put the components back in the right sequence: lower bearing cap (the convex side facing the bearing), springburr and adjustment dial.
J-Series grinder
  • Tighten the adjustment dial clockwise to the tightest with the crank handle fixed.


Do not attempt to disassemble or remove the following components:
J-series grinder
The central shaft
J-series grinder
The burr ring unit and outer burr
J-series grinder
The bearings attached to the hopper


  • Do not clean and wash the grinder with water.
  • Do not wipe your grinder with solvents other than water and alcohol.
  • Keep it in a dry environment in order to extend its lifetime.
  • Follow the instructions of re-assembly, ensure to place the components into the correct positions.
  • Keep the grinder away from children for safety concerns.
Shopping Cart


(For example: JX $129 + Shipping $10 = Total $139)

If YouYou’ll Receive
Cancel before an item is shippedfull refund (item’s price + shipping)
= $139
Return an item in original condition within 7 calendar days from the date you received it100% of the item’s price
= $129
Return an item in original condition over 7 calendar days from the date you received it80% of the item’s price
= 129*0.8 = $103.2

*Any customs duty or relevant charges incurred will be deducted from the refund. (The table above does not include additional charges.)


*A refund request over 7 calendar days from the date you received an item will be refunded partially (80% of the item’s price) and might be denied since the item has been used.



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