Hook the mounting end of combination tool over the rim flange and locate the slot in the tool over the center post key. Rotate the tire clockwise until bead contacts the combination tool. Continue to rotate the tire clockwise until the lower bead slides into the grove of the combination tool and into the drop center of wheel. With one hand pushing down on tire to hold bead in drop center, and with other hand holding free end of combination tool, depress foot pedal. As tool rotates, continue to push tire bead into drop center of the wheel with your hand.
Top bead is mounted in the same manner as bottom bead.
With valve stem on top and on operators side of machine, connect the air chuck to the valve stem. Push lightly on air-flate foot pedal to make sure air is going in. Lift the tire up against the upper edge of the rim, and be sure the top bead of the tire is over the bottom of the valve stem. The blast of air will seat the beads. Release the air-flate pedal to off position.