A cutting platform for use with an agricultural harvester includes at least one platform section. Each platform section includes a frame, a cutterbar assembly defining a leading edge of the platform section, an endless belt, and a plurality of float arms pivotally attached to the frame. The cutterbar assembly is movable in a localized manner in upwards and downwards directions. At least one float arm carries a roller which supports the endless belt and is positioned within a loop of the endless belt. Each roller is pivotable or removable relative to the corresponding float arm.