How do you set the idle speed on a 1965 mercury outboard?

To set the idle speed on a 1965 Mercury outboard, first ensure the motor is warm and running. Locate the idle adjustment screw, typically found on the carburetor, and use a screwdriver to turn it clockwise to increase the idle speed or counterclockwise to decrease it. Adjust until the engine runs smoothly at the desired idle speed, avoiding excessive RPMs that could cause stalling or rough operation. Finally, double-check the adjustment by letting the motor idle and observing its performance.