Mickey2

I have a beige 1955 201K with similar belt driven motor. There are two tiny holes at each end of the motor reaching the motor axle, (in other words bearings). Inside there is a type of wadding, and it's meant to be oiled. My 99K and black cast iron 201K has obvious grease ports, shiny metal tube like things; the Singer tube with motor grease fits perfectly in the tube opening. I hope this helps, I can't take pictures until tomorrow. If the machine has been used a lot you can open the motor and check bearings and carbon brushes, clean out carbon dust etc. I think you are meant to add grease once or twice a year, oil more frequently; a drop once a month or so is my guess. There isn't much wadding, just a bit, but it takes a few drops to soak up enough to reach the ends of the motor axle if it's dry.