The KI Lubricator one-shot lubricating system is pre-set by the machine manufacturer for best operation. These lubricators are spring discharge piston pumps mounted in a reservoir on the machine. Pulling out the tee handle to full stroke fills the cylinder with a pre-determined volume of oil. Spring pressure discharges the oil into the distribution system automatically and returns the handle to the original position. The lubricator must be operated at intervals recommended by machine manufacturer.