How do I properly install and adjust the gas supply for the Miller Matic 211?

Secure the gas cylinder to a stationary support so it cannot fall. Remove the cap, open the valve slightly to clear dust, then close the valve. Install the regulator/flowmeter with the face vertical and connect the supplied gas hose between the regulator and the welding power source. Set flow rate (typically 20 cubic feet per hour) when gas is flowing through the power source and gun with the gun trigger pressed. Check your wire manufacturer's recommended flow rate. Do not use an Argon/Mixed gas regulator with CO2 shielding gas.