Abstract: An improved lubrication system for the spindle bar assembly of a cotton harvester apparatus is disclosed. The system comprises a hydraulic pump connected to the hydraulic system of a harvester which pumps lubricant from a disposable cube of lubricant located on board the harvester into a manifold system having conduits in fluid communication with the existing lubrication system of the harvester, and a fluid restriction device disposed in line with the conduits to control the flow of lubricant to each spindle bar so that equal amounts of lubricant are provided thereto, notwithstanding differences in the lengths of the conduits.