89b2200
+1y
Sorry, don't have a bigger pic. I'll see if I can get a bigger one later. Too busy with other cars.
If you look at the base of the carb, towards the firewall, where the throttle body shaft sticks out of the carb base, there is a lever on the shaft and a linkage that goes to the top of the carb where it attaches to the electric choke shaft.
Under the lever, there is a slotted hex screw for choke rpm adjustment. You have to look harder, it is hidden somewhat.
Screw it IN with a flat screw driver and it raises the rpm. Screw it OUT, lowers the rpm. Screw it out half a turn each time to lower rpm. Do this on a cold start up. Do not blip the gas pedal until you made the adjustment. Check it again next morning and adjust rpm to your liking.