Directions: 1. Heat the cleaning fluid. 2. Print the "nozzle checking" test page to confirm the color to be cleaned. 3. Pick out the ink cartridge. 4. Inject the cleaning fluid into the print head that needs cleaning with a syringe. 5. Install the ink cartridges and run the "nozzle cleaning" function twice in printer driver. Package content: 3.4 oz Print head Cleaning Fluid 1 ¡Á Syringe(10 ML) 1 ¡Á silicone tube 1 ¡Á instruction manual Risk Warning: 1. After finishing cleaning with this fluid, you need to use the printer's cleaning program for printhead cleaning, which will consume a lot of ink. Please ensure enough ink in advance. 2. Since there are several causes for printer blockage. This cleaning fluid does not ensure that all blockages will be solved. Such as: (1) The printhead blockage is very serious or there is insoluble substances in the nozzle, this cleaning fluid might not work. (2) The printhead is aging, the blockage situation might get worse after cleaning. 3. Since you are not a professional, there is a risk of damaging the printer when repair it by yourself, such as: when you inject the fluidinto the printhead, if there is leakage or improper operation, it will cause a short-circuit, which will lead to the circuit board burned, even the printer damaged completely. Please take this product as last attempt. We will not be responsible for the loss or damage caused by cleaning, but we will do our best to solve your problems. If it doesn't work, please contact our seller and you will get a refund. Although there are the above risks, most customers can clean the printhead successfully under our guidance. After reading this tip, you can decide whether this cleaning solution is worth trying according to your own situation. If you have any other questions, you can contact our seller, we will give you professional guidance.