Not sure on starter (I have a 1950 3100) no oil caps on it. I think mine is the Aluminum end. The distributor has a grease cap. Twist It once a year when you change the oil. On generator their should be a front and a rear oil cap. Flip it up put two drops of oil in it . If the bearings were replaced (like mine) they are Sealed bearings and the oil cups don't work to oil them. In the picture my generator is missing the rear oil cup. Only pictures I can find right now. Todd
