Honda Interceptor 2014 Owner's Manual page 8

Safety Guidelines
Carbon Monoxide Hazard
Exhaust contains poisonous carbon monoxide,
a colorless, odorless gas. Breathing carbon
monoxide can cause loss of consciousness and
may lead to death.
If you run the engine in a confined or even
partly enclosed area, the air you breathe could
contain a dangerous amount of carbon
monoxide. Never run your motorcycle inside a
garage or other enclosure.
WARNING
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Carbon monoxide gas is toxic.
Breathing it can cause
unconsciousness and even kill you.
Avoid any areas or activities that
expose you to carbon monoxide.
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