Refill Instructions for Lexmark 80 & 85 ink cartsVideo showing how to refill Lexmark 80 & 85 ink carts.
1. Cut around the edge of the lid
2. Inject the correct ink slowly(7ml) into each chamber
3. Re-attach the lid with tape
4. Leave the cart to stand for 2 hours
http://www.disc-info.com/downloads/jr-refill/lexmark/jr-lex-12a1985.pdf