Before using tool on a critical area, pick an area to test operation. Start tool and bring wheel in contact with work surface. With wheel rotation shown, start at right side of adhesive and work to the left, applying light pressure. A slight up and down motion will speed removal. For maximum wheel life, a speed of 1500 RPM is recommended. Optimal speed will vary with thickness of adhesive residue, with heavier residue requiring a lower speed. As a rule of thumb, the higher the speed, the lighter the pressure required. With proper operation, wheel will not harm clear coat and no cleanup is required. Replace wheel when outer diameter approaches 2″, thus preventing accidental contact with metal washer.