Honda CRF250L 2019 Owner's Manual page 72

Drive Chain Checking the Drive Chain Slider
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# Checking the Drive Chain Wear
Check the chain wear label when adjusting
the drive chain. If the indicator groove on the
chain adjuster plate enters the red zone on
the label after the chain has been adjusted to
the proper slack, the chain is excessively worn
and must be replaced.
Chain: DID 520VF
If necessary have the drive chain replaced by
your dealer.
68
Checking the Drive Chain Slider
Check the condition of the drive chain slider.
The drive chain slider will need to be
replaced if the chain slider is worn to the
wear limit indicator or wear limit line.
To inspect the wear limit line, remove the
drive sprocket cover by removing the bolts.
If necessary have the drive chain slider
replaced by your dealer.
Indicator
groove
Red zone
Drive chain slider
Wear limit
indicator
Wear limit
line
Drive sprocket cover Bolts