Honda CRF250F Owner's Manual Installation And Operation page 224

IF UNSTABLE ENGINE OPERATION OCCURS
INTERMITTENTLY
If the fuel pump filter is clogged, unstable
engine operation will occur intermittently
while riding.
Even if this symptom occurs, you can
continue to ride your motorcycle.
If unstable engine operation occurs even if
sufficient fuel is available, have your
motorcycle inspected by your dealer as
soon as possible.
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