How to flush radiator

Hello, Use an off-the shelf coolant system flush, follow the instructions for that particular chemical. Once you have met the required cleaning mileage/time specified, there is a drain on the radiator (at the bottom), and there will be a small plug on the engine that you can remove to drain all coolant. Reseal and install the engine drain plug, and close the petcock on the radiator. Then, refill with the coolant type specified on your owners manual. Then, bleed if necessary, and ensure the coolant reservoir is filled to the appropriate level.