Honda EM5500CX Owner's Manual page 7

Disposal
To protect the environment, do not dispose of the used generator,
battery, engine oil, etc. carelessly by leaving them in the waste.
Observe the local laws or regulations or consult your authorized
Honda generator dealer to dispose of these parts.
Please dispose of used motor oil in a manner that is compatible with
the environment. We suggest you take it in a sealed container to your
local service station for reclamation. Do not throw it in the trash or
pour it on the ground.
An improperly disposed battery can hurt the environment. Always
confirm local regulations for battery disposal. Contact your Honda
servicing dealer for a replacement.
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