i have a xr250L which has been cutting out once warm. after a few minutes and a few kicks she will start again,run fine, then conk out again,usually at a junction. i have my suspicions of what it is just not sure. either pulse generator or ht coil. what do you reckon?
first you must clean your carburator.maybe is dirty.
check your tank if is clean.if you are sure that your fuel lines are ok,then you must check your cdi.