A harvester or combine includes a folding corn head with a center section and folding wing sections. A folding row separator cover at the hinge location of the folding head sections folds to an angled position so that the folding action between the wings and the center section is not impaired. A single assembly actuates the folding of the row separator as well as locking and unlocking of the wing sections relative to the center frame section. A hydraulic cylinder actuates a main link that connects to the row separator cover and to a lock pin. Actuation of the hydraulic cylinder raises and lowers the cover and disengages and engages the locking pin.