Unclogging Adapter for HP Printhead Cleaning: 564 902 910 920 934 935 - 1 Pair

Printhead Flushing Tool

Unclog HP printheads: 

• HP 910
• HP 564
• HP 902
• HP 920
• HP 934/935

The package includes ONE pair (1 big & 1 small) adapter with tube and 10 ml syringe. The tip can work on HP's black grommet directly. The adapter is designed to have an angle with the syringe connection so that you can fit the syringe into more tight situations.  

To use:

1. Put the printhead into the middle of the printer. You can start the printer and, as soon as the printhead moves, cut off the power. The printhead should be free to move. Slide some paper towel underneath the printhead to absorb ink overflow.
2. Fill the syringe with 10 ml of cleaning solutions. Put either small or big adapters on the tip of the syringe.
   • Suggested cleaning solution: 
     • Small clog: Clear Cleaning Solution
     • Medium clog: Green Cleaning Solution
     • Extremly bad clog: Red Cleaning Solution
   • Suggested syringe and needles: https://bchtechnologies.com/10-ml-syringe-with-extra-long-needle-as-sy510/
3. Put the syringe (with adapter) on top of HP's ink intake, as seen in the picture. Push down the syringe vertically so it can create a good seal with HP's black grommet. If you have a problem with the seal, try to lay a BCH silicone washer on top of HP's grommet (https://bchtechnologies.com/5-pcs-silicone-washer-seal-pad-for-hp-or-canon/). You don't need to remove the silicone washer after this. The washer is designed to be installed on the top of HP's grommet to fix HP's air leaking problem. The washer will be beneficial to the printhead.
4. Slowly and gently push down the syringe and inject the cleaning solution into the printhead. You will need about 5 ml for the black and 3 ml for each color. Do not push too hard.
5. Depends on the type of cleaning solution, BCH's solution will need from 1 hour to 12 hours (max) to work on the clog. Put a wet paper towel on top of the printhead and close the printer lid.
6. After 1 to 12 hours, depends on how bad the clog is, reinstall the cartridges and do some head cleanings with HP's built-in function.
7. Repeat 3-6 if necessary. We attached an example below.
8. Run some "clean smear" routines from your maintenance menu or print a few more pages to remove the stain from the flusing.