This V-belt transmits drive power from the engine to the driven components in the harvester's drive system. It runs on pulleys that connect the engine output to the feed rolls and cutterhead, maintaining synchronous speed across the driveline. A worn belt slips under load, causing a loss of cutting and feeding torque that reduces throughput. This original belt is molded to the same cross-section profile as the original assembly, so it seats correctly in the pulley grooves without requiring tensioner adjustment beyond the standard range. On installation, verify the belt runs in the correct rotation direction and tension it to the manufacturer's specification.