Abstract: A chain drive lubrication system includes a pressurized can of lubricant having a top-mounted spray nozzle and a can support structure supporting the pressurized can of lubricant generally adjacent a chain drive with the top-mounted spray nozzle aiming the chain drive. A can securement device such as a set screw is mounted on the can support holder to releasably secure the pressurized can of lubricant in the can support structure. A trigger device is mounted on the can support structure extending above the top-mounted spray nozzle, the can support structure being generally free of spray nozzle engagement structures excepting the trigger device. Finally, the trigger device is operative to alternatively depress and release the top-mounted spray nozzle thereby spraying lubricant from the pressurized can of lubricant onto the adjacent chain drive.