This replacement gear has a smaller rotation radius for the pin that moves the soap pump. I reduced the radius to 3.1 mm.
After the modification the soap lasts for a very long time compared to the original gear.
For easier printing the part is splitted and has to be glued together after printing. I recommend UHU "Allplast" or “Hart Kunststoff”.
Instructions for disassembly can be found on youtube.
The author marked this model as their own original creation.