<strong>4.</strong> The Super Coupler from Power Tank delivers a large volume of air, unlike the restrictive regular clip-on chucks. The volume of CO2 is what seats the bead, so using this method is the best. Set the outlet pressure on the regulator to full open (250 psi in this case) and push the Super Coupler straight over the valve stem. The sudden rush of air should force the tire onto the rim. Hold the chuck on until a pop is heard, indicating a seal, then install the valve core and check the pressure. Sometimes it helps to hold the tire against the rim, so a helper is handy.