Honda BIG RED 2009 Owner's Manual page 115

Coolant
Coolant Replacement
Refer to Safety Precautions on page 69.
Coolant should be replaced by your Honda dealer, unless you have the
proper tools and service data, and are mechanically qualified. Refer to
the official Honda Service Manual.
Removing the radiator cap while the engine
is hot can cause the coolant to spray out,
seriously scalding you.
Always let the engine and radiator cool down
before removing the radiator cap.
To properly dispose of drained coolant, refer to You & the Environment ,
page 162.
Improper disposal of drained fluids is harmful to the environment.
106 Servicing Your Honda