Honda CRF450X 2021 Manual page 75

Electrical Trouble Burned-out Light Bulb
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Taillight
The taillight uses several LEDs.
If there is an LED which is not turned on, see
your dealer for servicing.
This model is equipped with an electric
starter and battery for easy engine starting.
There is a possibility of damage to the
lighting system if the battery is carelessly
removed.
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