The Lexmark 43 and 44 ink cartridges are compatible with X9575, X9350, X7675, X7550 and the X4875 Lexmark printers. The refill kits for the colour and black ink cartridges can be used to refill the cartridges up to 10 times. The ink cartridge should be filled as soon as it runs empty to prevent the cartridge from drying up.
Spread out a piece of newspaper where you plan to work. Remove the supplies from the refill kit. The Lexmark 44 will have one bottle of black ink, one thumb drill and one syringe. The Lexmark 43 will have one bottle each cyan, magenta and yellow, three syringes and one thumb drill.
Remove the label from the ink cartridge. The black refill hole is at the top of the ink cartridge. Use a toothpick to check the colour of each fill hole on the colour ink cartridge. Generally, the magenta is at the top of the cartridge, the yellow is at the left centre and the cyan is at the right centre.
Use the thumb drill to open up the fill hole to fit the syringe needle. Place the tip of the thumb drill on the fill hole and twist until the hole opens up larger. Do this for each colour hole on the colour ink cartridge.
Fill each syringe with 7ml of colour ink (one for each colour) and 15ml of black ink. Insert the syringe needle into the bottle of ink and pull the plunger upwards.
Place the tip of the syringe needle into the fill hole. Slowly press down on the plunger. If the ink seeps out while filling, stop filling the cartridge and wipe up the ink with a paper towel. Some cartridges may not need the full amount of ink. Repeat this step for each of the coloured ink fill holes.
Replace the ink cartridge in the carriage of the printer. Run one to three test pages to cycle the ink and check the printing. Use any document with colour on it for the Lexmark 43 and any document with black text for the Lexmark 44.