Motorcycle coolant, though not usually considered a main concern, must be changed on occasion. Coolant has a tendency to become less effective and to become contaminated over time. Replacement coolant is cheap, and so it is wise to replace regularly.
Place a bucket or pan under the motorcycle to catch the used coolant.
Remove the coolant drain bolt from the underneath of the motorcycle. Allow the coolant to drain out completely. This shouldn't take long.
Use a clean rag to remove any debris or contaminants from the coolant drain bolt.
Replace the drain bolt.
Open the coolant cap (usually located just under the front fairing of the motorcycle).
Pour in the amount of motorcycle antifreeze suggested in your motorcycle's owner's manual.
Replace the coolant cap. To seal it tightly, make sure the cap is twisted completely.