Don't forget to "burp" cooling system after coolant change to purge air from system.
Crank engine and allow to idle for 2 to 3 minutes.
Then, while on the side stand (to allow any air to migrate towards the radiator cap), blip the throttle 3 or 4 times to purge air in cooling system, stop engine and check coolant level.
Then check coolant overflow bottle is at mid-level between low and high.
Don't overfill the overflow bottle as it can dump excess coolant through the vent hose to the ground, in front of the rear tire. And you know how slippery coolant can be.