The invention is directed to lock levers for use in an automatic beverage machine for filling cans for example. The lock lever may have an L-shaped configuration with a first and second leg, and a first engagement surface on a side of the second leg which transitions to a second engagement surface at the distal end of the second leg. The lock lever is selectively rotated between operational and non-operational positions, and the first engagement surface transitions into the second engagement surface. The transition from the first engagement surface to the second engagement surface positions the second engagement surface at a predetermined height without the first or second engagement surface extending above the predetermined height.