Loosen clamp with flat screwdriver. Turn clamp screw counter-clockwise. Grasp hose at connection point. Twist and pull. Use a piece of sandpaper or steel wool to clean connection nipple. Slide clamp over end of new hose. Insert new hose on nipple as far as it will go. Slide clamp down to within 1/4 inch of hose end. Tighten clamp with screwdriver-turn clockwise. Refill cooling system and check for leaks.