Abstract: A kickover tool for installing devices such as gas lift valves in and removing them from the offset side pocket receptacles of side pocket mandrels in wells. Kickover movement of the device carrying means from a longitudinally aligned, running-in position to a laterally offset position for landing or pulling the device is controlled by means actuable by engagement with a shoulder in the well flow conductor during upward movement of the kickover tool. Means for positively locking the device carrying means in the laterally offset or kickover position are disclosed, these means being automatically releasable upon withdrawal of the kickover tool from the side pocket mandrel.