This V-belt transmits power from the engine pulley to the drive system of the harvesting machine. It is a three-rib belt that sits in the drive system, connecting the engine output to the driven components that power the machine's forward motion. A worn or slipping belt causes reduced ground speed and uneven feeding of crop material into the threshing mechanism. The manufacturer's original profile matches the pulley grooves so that the belt seats at the correct depth, preventing slippage under load. On installation, verify the belt is fully seated in all pulley grooves and adjust tension to the specified deflection.