Greetings, fellow coffer-lovers.

How often that you clean your 1Zpresso manual coffee grinder? 
Proper maintenance could prolong the life of your grinder for a long period of time.
We advise customers to dismantle the grinder once a month to perform cleaning and maintenance.
The grinder could dismantle without any helps from the tool.

Here is a reassemble tutorial for the top adjustment mechanism of J-Max & K-Pro & K-Plus grinder.
You also can find the cleaning and maintenance tutorial of the internal adjustment and top adjustment from our blog. 
Below image demonstrating the re-assembly with K-Plus grinder.




Step 1:

Remove the crank handle and the catch-cup.

K-Plus Grinder without the crank handle and the magnetic catch-cup

J-Max grinder: Turn the adjustment dial ring clockwise by around two rotations

J-Max grinder at around two rotations grind settings



Step 2:

Pressing the burr set and loosen the knurled thumb nut by turning counter-clockwise.

Pressing the burr of K-Plus Grinder
Loosening the knurled thumb nut of K-Plus Grinder



Step 3:

Take out the burr set by pressing down the central shaft. Collect the upper ring cap and the upper bearing which inside of the adjustment dial ring.

Remove the burr set of K-Plus Grinder
Take out the upper bearing cap and the upper bearing of K-Plus Grinder

Step 4:

K-Pro & K-Plus grinder:
The adjustment dial ring and the outer burr ring can be taken out by turning clockwise. (For K-Pro grinder user: Attaching the catch-cup to remove the outer burr ring by turning clockwise.)


Remove the adjustment dial ring of K-Plus Grinder

Remove the outer burr ring of K-Plus Grinder

J-Max grinder:
The outer burr ring can be taken out by turning clockwise. Disassembling the adjustment dial ring is not suggested.

Note: the outer burr ring unable to remove without taking out the burr set.

Warning about disassemble the adjustment dial ring of J-Max grinder



The magnetic catch-cup of K-Plus grinder could be dismantled in three parts. Remove the magnetic attachment ring by turning counter-clockwise. Turn counter-clockwise to separate the closed receiver from the open receiver.

Perform the step reversely to recover the catch-up.

Remove the magnetic attachment ring of K-Plus Grinder
Change the closed receiver from the open receiver of K-Plus Grinder
The blind shaker of K-Plus Grinder
Press to remove for throughout cleaning.



Step 5:

Take out the pc lid by turn counter-clockwise throughout cleaning. Apply some strength to detach the wooden ball.

Clean it with the brush & air blower and be sure do not to apply water to wash it.

Cleaning and maintenance of K-Pro grinder

Step 5.1

There is another design of the crank handle. It needs a 6mm hex key/Allen key to remove the pc lid by turning counter-clockwise.

Remove the crank handle of K-Pro grinder



Step 6:

Put the wooden ball into the crank handle till you hear a click sound and tighten the pc lid by turn clockwise.

Turn the outer ring burr counter-clockwise to secure.

The full parts of K-Plus Grinder

Step 6.1:

Followed by step 5.1. Apply a 6mm hex key/Allen key to install the pc lid by turning clockwise till it tightens.   

Tighten the crank handle of K-Pro grinder with a hex key


Step 7:

Place the pieces in order to ensure the grinder works perfectly. The central shaft and the burr set fixed together, you need to put it back into the grinder. Before that, you have to place the spring then the bearing cap on the burr set.

Note: the spring is the conical shape in which you need to place the larger surface upward as the opposite of the smaller surface and the protruding side of the bearing cap consider facing upward.

The spring and the bearing cap attach on the burr of K-Plus Grinder
Install the burr set into K-Plus grinder
Holding the burr of K-Plus grinder

Step 8:

Insert the upper bearing into the adjustment dial ring. Now it is a tricky part, you would notice there is a horseshoe shape appearing from the upper bearing cap. The flat side from the upper bearing cap needs to match the flat side of the central shaft as well.

Placing the bearing into K-Plus grinder
Placing the bearing cap into K-Plus grinder

Step 9:

Pressing the burr set and tighten the knurled thumb nut by turning clockwise till you feel a resistance (do not overtighten or it hurt the burr set).

The next and the last step is the calibration, kindly read the post of How to Calibrate 1Zpresso Grinders? from our blog.

Tighten the knurled thumb nut of K-Plus grinder
A fat hand holding K-Plus Grinder
  • K-Plus Grinder | K-Pro Grinder
  • J-Max grinder
  • K-Plus Grinder
  • K-Pro Grinder
  • J-Max grinder
  • K-Plus Grinder with the travel case
  • K-Pro with the Cylinder Case


Our office will be closed from Sep 18th to 21st (GMT+8) due to the Moon Festival.
Orders placed during this period will be shipped after Sep 22nd.

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