Honestly Now, Have You Read The Owner's Manual?
A new section "Factory Instruction Manuals" has been added to the Digital Library, including re-edited/cleaned up SPAS 12 manuals from both FIE and American Arms versions. They're slightly different from one another, aside from mentioning the lever/crossbolt differences so you may want to give them both a read. They're in gallery format for ease of navigation, open the first image and then you can click left/right to navigate the pages. Bonus material is an original manual from a Franchi PA7, more details on that to come.