This V-belt transmits power from the engine drive pulley to the header and threshing components of the parent combine. It sits in the drive system, connecting the primary power source to the mechanical loads downstream. A worn or slipping belt reduces rotor speed, leading to incomplete threshing and material buildup in the concave. This original belt is manufactured to the same cross-section profile as the original assembly, which maintains proper tension and prevents uneven wear on the pulley grooves. On installation, ensure the belt is not twisted and that the tensioner is adjusted to the specified deflection.