How do I refill a No.1 Lexmark print cartridge?

well the first thing is that you need to buy the refill kit.Then you will have to remove the cartridge and let the head dipped in a 3mm layer of white alcohol just to prevent it from going dry.Then you must remove the top sticker.You will see a rather big hole underneath it.Use the sinringe and let the needle go fully down the hole and then pull it halfway before you start to inject the ink.watch the level of ink.don't let it overflow...Once done.use a tape to seal the hole. Thats it.simple...