A foldable top cover for an agricultural mower that includes first and second generally planar cover portions connected by an intermediately positioned hinge that reduces the required overhead clearance necessary for opening the top cover. The hinge connection axis is offset in a first direction from the from plane of the cover portions and further includes hinge stops on the first and section portions that limit the hinge motion so that the first and second portions are maintained in a generally co-planar arrangement when in an operating position but may be folded in a direction opposite to the offset direction of the hinge connection thereby allowing the top cover to be compactly repositioned for service access to the mower.
