Catalina 25 Swing Keel Operation

Hi Friends, we just bought a 1980 Catalina 25 with a swing keel easy to crank up but I don’t see a release to drop keel. Maybe you raise and it drops after reaching top, but I did not want to experiment and can’t find online or in PDF manual. Help much appreciated. John

Catalina Direct has an article on how the system is supposed to work:
https://www.catalinadirect.com/how-the-system-works/