You do a head wash in service mode. However, before you switch, considering the following. Are you currently using OEM or aftermarket ink? If you are using OEM, before you go to the trouble and expense of switching to aftermarket inks, you need to consider a couple of things. What is your printing volume and how often do you print? Also calculate how much is your ink cost per square foot for each ink brand, as opposed to how much per cartridge. You may be surprised at the number, likely within a few cents or less at most. You can always increase your sq ft cost to cover it, if it's that critical. I have nothing against aftermarket inks, and there are both good and bad ones out there, even worked for an aftermarket ink manufacturer for a couple of years, doing color profiling. Just don't let the cost per cartridge be the only deciding factor. Ink isn't like gas, where you look for the cheapest price. Consider everything, including cost of potential repairs and loss of work during repair downtime. Research the feedback on whatever ink you are considering. If it's good, go for it.