Idles too fast

There's a speed screw at the base of the throttle bore, close to the cold start valve.

Make sure the gas cable is not adjusted too tight and that the throttle position is correct.

There's also a deceleration valve that can stick, causing high idle. Disconnect the vacuum line at the valve to see if the idle drops.

To add check that auxillary air valve is closed when engine at temp pull hoses and use mirror to see plate