Some early models may have a slightly different plate (ref 2) mounting arrangement (see inset). If this arrangement is on your model, it should be converted to the later style by changing the capscrews (ref. 3) and adding the jam nuts (ref. 22).
Some early models may have a slightly different plate (ref 2) mounting arrangement (see inset). If this arrangement is on your model, it should be converted to the later style by changing the capscrews (ref. 3) and adding the jam nuts (ref. 22).