Actually, the picture shows the ring as used in other models that used a wave washer (such as 3 hp). It has a step around the edge for the wave washer. The draftsman was too lazy to re-draw it for models w/o the wave washer, figuring nobody would notice. But you and I and others noticed.
This reply was modified 4 years, 7 months ago by frankr.
This reply was modified 4 years, 7 months ago by frankr.