Refill Instruction HP 74
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HP 74

 

 

HP #74 Cartridge

Refill Instructions
Black cartridge

Instructions

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

2. Peel off the top label.

3. Fill the syringe (with needle) with 20ml. of black ink.

4. Very S-L-O-W-L-Y inject ink into any hole (they all go to the same sponge, HP just used the same color mold for the black ink cartridges).

5. When finished leave the top label off and the filling holes exposed (when printing it has to pull in air).

6. Replace the cartridge and run 1 - 3 cleaning cycles as per printer instructions.

For best results, leave cartridge in printer for 8 hours after refilling so the ink can saturate the entire sponge.