A cutting platform (12) for use with an agricultural harvester (10) includes at least one platform section (16,18,20). Each platform section (16,18,20) includes a frame (26), a cutterbar assembly (22) defining a leading edge of the platform section, an endless belt (32), and a plurality of float arms (28) pivotally attached to the frame (26). The cutterbar assembly (22) is movable in a localized manner in upwards and downwards directions. At least one float arm (28) carries a roller (54) which supports the endless belt (32) and is positioned within a loop of the endless belt. Each roller (54A,54B) is pivotable or removable relative to the corresponding float arm (28).