https://ttlc.intuit.com/questions/1912544-how-do-i-save-my-2015-turbotax-online-return-as-a-pdf
Doesn't work
Click the Print button on the Print & Save page. On the page that opens, you'll be able to choose specific forms, and save as a PDF.
Doesn't work- I only see an entire PDF- and cant save just the 1040 form
Are you trying to save a year earlier than 2015?