M71501 7. Remove black drain plug bolt (D) on each side of engine to drain coolant from engine block. 8. After all coolant has drained, close radiator petcock and install block drain plug bolts. 9. Flush cooling system. Flushing Cooling System IMPORTANT: Avoid damage! To prevent engine damage, DO NOT pour water into a hot engine. DO NOT operate engine without coolant. 1. Drain cooling system and fill with clean water and a cooling system cleaner recommended for aluminum engines. Follow the directions on the container. M71502 2. Install and tighten radiator cap (A). 3. Start and run engine until it reaches operating temperature. 4. Stop engine 5.
Drain cooling system immediately before rust and dirt settle. 79