I been recharging my printer toner 3-4 times and know i need to know wish parts of the toner i need to change?

excelent, okey now the details, i have a printer HP 4050 , and i want to refill the toner manual, i know that i need to change some parts of the thing that contain the toner, but i dont know wish part of the toner do i have to change, you know, and im learning its important to know that this toner has been refilled 2-3 times, and for refill 1 more time, i need to change parts, can you tellme wish parts do i need to change? ( reciclable parts, like 1-2 dolars parts idk ) .I been recharging my printer toner 3-4 times and know i need to know wish parts of the toner i need to change?
A great way to keep expenses down, however I don't know how well it will work out to try replacing any of the parts other than adding the toner. The internal components that can wear out would be the drum, cleaning blade, seals and gears. If your cartridge is still working I'd say just keep adding the toner until it no longer works right then turn it in for recycling (and possibly a credit) and buy a remanufactured cartridge and do it all again. I don't know of anywhere that you can purchase those internal parts by themselves, but there may be. It would also be pretty risky to disassemble the cartridge, replace all those parts and put it back together without problems as the case and other parts can be easily damaged leading to leaks and other problems.