Honda GL1800 2004 Owner's Manual page 142

Coolant Replacement
Refer to Saf ety Precautions
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 (page
To properly dispose of drained coolant, refer to
173 .
Improper disposal of drained f luids is harmf ul to the environment.
on page 106 .
218 ).
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.
Coolant
You & the Environment,
Servicing Your Honda
page
135