should get a refill kit

The refill kit has a syringe like injection tube. You can buy it on ebay or computer stores.

Some printer requires you to drill a small hole before injection, others don't.

You can inject blank ink to the three other ink tank as you don't need to print color pages anyway. Brother and a few other printers are known to use some ink to keep the printhead usable. If it's dried up for long enough you have to change the printhead.

At lease you don't need a resetter like some of us who owns those damn Epson models!