If it's Windows 10 there is a check box that says "Let Windows manage my default printer." In theory it is supposed to use the last printer at your current location. In reality it does weird stuff. If you are trying to reset your default, uncheck that box, then choose a new default.
About the original topic, you can print your book before submitting to kindle. It will not be worth to print and sell. CS will do that for you.
I am not sure if this is what you're asking or I misunderstood you. Good luck!
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