Honda CRF250F 2023 Owner's Manual page 186

California Proposition 65 Warning
WARNING: Operating, servicing and maintaining a passenger vehicle
or off-highway motor vehicle can expose you to chemicals including engine
exhaust, carbon monoxide, phthalates, and lead, which are known to the State
of California to cause cancer and birth defects or other reproductive harm. To
minimize exposure, avoid breathing exhaust, do not idle the engine except as
necessary, service your vehicle in a well-ventilated area and wear gloves or
wash your hands frequently when servicing your vehicle. For more
information go to www.P65Warnings.ca.gov/passenger-vehicle.