This spring applies tension to hold components in position within the header and threshing mechanism of the host machine. It maintains consistent force on the linkage or lever it is attached to, ensuring that the connected parts return to their correct rest position after each cycle. A spring that has lost its tension will allow slack in the linkage, leading to inconsistent engagement or incomplete return of the moving assembly. As an original component, its free length and coil diameter are matched to the specific pocket and load requirements of the original assembly, so no shimming or adjustment is needed during replacement.