Edelbrock IMS (idle mixture screws) are adjusted with a flathead screwdriver. Setting an Edelbrock carburetor to run efficiently is not a difficult thing to do. Learning how to set air mixture screws on Edelbroc
Take the carburetor to a bench and set it bottom side down. Use a screwdriver to remove the small screw that holds down the metering rod hanger. It has a Y shape. Use pliers to unhook the choke that attaches the top carburetor plate to the bottom plate. Use a hammer and punch to dri...
Turn the carburetor upside down and unscrew the base plate screws (4), using a screwdriver. Pull the base plate and gasket off the base of the main body. Match the gasket pattern of the original gasket to the correct gasket from the rebuild kit and discard the old gasket. Return the ca...