There are two methods you can use to refill this cartridge.
Use the one that suits you the best.
Method One

1) Put the needle onto the syringe and suck up 25ml of black or 20ml of color ink.

2) Remove the needle from the syringe.

3) Put the cartridge on a flat, ink proof surface, with the bottom facing up.

4) Push the tip of the syringe into the "ink exit hole" and tilt the syringe to the side. Remember, you should not have the needle on the syringe.
Note: Do not bump or press the "pressure release button".

5) Pull back on the syringe plunger until 3-4 ml of air from the cartridge bubbles up through the ink. A slight vacuum will form in the cartridge. Then push on the syringe plunger slightly to inject 3-4 ml of ink.

6) Repeat this step 5-8 times to pump the air out of the cartridge and replace it with ink

7) When the process is complete, the syringe will be filled with air. Pull back on the syringe plunger one more time to pull a few extra ml of air out of the cartridge and then pull the syringe out of the "ink exit hole".

8.Replace the cartridge(s) and run 1 - 3 cleaning cycles as per printer instructions.
Or print the following pages:
http://www.refillinstructions.com/black.htm  for Black
http://www.refillinstructions.com/color.htm  for Color 

Method Two

1. Put the cartridge on a newspaper or some paper towels in an area where you can tolerate a spill.

2. Turn the cartridge on its side and drill a hole 1/4 inch down from the black cap into the clear part of the plastic (see Photo)

3. Fill the syringe with 20 ml. of ink.

4. Insert the syringe through the drilled hole, If the needle hits the inner part of the cap then aim the needle in a downward position as seen in the photo.

5. Slowly inject ink until you see the ink come up to just below the drilled hole.

6. Cut a small square of aluminum tape and reseal the drilled hole.

7. Unused ink may be returned to the bottle.  Rinse the syringe with warm water and dry for future use.

9.Replace the cartridge(s) and run 1 - 3 cleaning cycles as per printer instructions.
Or print the following pages:
http://www.refillinstructions.com/black.htm  for Black
http://www.refillinstructions.com/color.htm  for Color