51645A, 51645G, 51640A, 51640C, 51640M, 51640Y, 51644C, 51644M, 51644Y, C6615DN , C6615AN

For maximum success, using the HP bottom filler (sold separately) makes the filling of these HP inkjet cartridges easier and neater.

1. Turn the cartridge upside down and using a peel back the plastic film covering the stainless steel ball bearing as shown below.

2. Using a screwdriver push the ball bearing into the cartridge.

3. Connect the needle to the syringe and fill with the correct color ink. Important: Do NOT insert the needle more than 1 inch into the cartridge as you may pur chase the bag inside the cartridge.

4. Inject 20 ml. of ink into the hole.

5. Squeeze the sides of cartridge while sealing the filling hole with the included plug, make sure that the plug is seated flush against the cartridge.

Important: Do not leave the cartridge resting a paper towel this will cause a wicking effect which will empty your cartridge.

7. Rinse the syringe with warm water and dry between each color refill or store for future use.

8. Reinsert the cartridge and run a priming cycle as per printer instructions

Note: Immediately refill any empty cartridges.