It looks like someone probably broke the original choke cover and replaced it with the older style non-electric buy this:
CARTER ELECTRIC CHOKE KIT FOR AFB 4 bbl CARBURETOR with HOT AIR CHOKE | eBay the small port under the choke can be blocked off take a good look at the picture below,this is how your choke should look.As I stated above ALL 9600 series Carters are electric choke.