PINBALLS: Every three to four years for re-rubbering, cleaning, adjusting, and replacing worn parts and lights.

JUKEBOXES: Vintage type should be lubed every three to four years with moderate play. Modern ones, every four to five years.

SLOT MACHINES: Antique type should be lubed every two to three years. Modern type, on an as needed basis.

VIDEO GAMES: On an as needed basis.