The following is about all you have to (Make sure you add about 4ml in each)
- Remove any label on top of the cartridge
- Locate the three tiny air inlet holes
- Drill through each with the supplied driller (refill kit)
- Push through the syringe's heads in each until you hit the sponge - draw it and with the ink in the head on a blank sheet of paper to learn what color each contains (yes repeat this for all three and not the colors in each hole)
- At this stage you can feed each with the relevant color ink - about 4ml per tank (be cautious about spilling ink on the holes surface as replacing the cartridge may be rendered almost impossible and the air trails will be clogged)
- Replace the label when done and re-install the cartridge back onto the printer