The pictures below show oiling locations for all models. Two of the oil ports are capped with stainless steel spheres. The container of oil included with your machine has a thin brass tube affixed to the mouth. Use
this tube to push down on the sphere to direct the oil flow into the port.
On the bobbin winder side, there are two oiling points. The picture to the left shows oiling points for the Classic and Optimum models.
Premier models do not have the oil port under the motor but instead have a brass oil pot located above and slightly to the left of the bobbin winder tension device as indicated by the gray rectangle in the photo at left.
Three oil ports are located on top of the upper arm as show at left.
One oil port is located on the lower arm just behind the throat plate. The final oil location is in the hook race which houses the bobbin case.