This V-belt drives the walker assembly that separates grain from material other than grain in the combine. It transmits torque from the drive pulley to the walker shaft, maintaining the oscillation speed needed for effective separation. A worn or slipping belt reduces walker speed, causing incomplete separation and increased grain loss over the sieves. The belt is constructed with a notched profile to flex around small-diameter pulleys without heat buildup. On installation, ensure the belt is tensioned to specification and that the pulley grooves are free of debris to prevent premature wear.