How do you flush the radiator on 89 Honda crx?

To flush the radiator on an '89 Honda CRX, start by ensuring the engine is cool and then place a drain pan underneath the radiator. Open the radiator drain valve or remove the lower radiator hose to drain the old coolant. Next, fill the radiator with a mixture of water and a radiator flush solution, run the engine for about 10-15 minutes, then drain again. Finally, refill the radiator with fresh coolant and check for leaks.