In Reply to: Re: 9N hyd linkage posted by William on November 20, 2018 at 13:20:30:
From the FO-4 manual (Copyright 1953)
To check quadrant adjustment, place an implement (or a weight of 200 - 300 pounds) on the lift arms and move the touch control lever downward. The lift arms should start to lower when the touch control lever reaches a point 2 5/8" to 2 3/4" down from the top position. If the lift arms start moving before or after the specified lever position, loosen the 4 quadrant attaching screws and move quadrant toward front or rear as required.
Easier to type that than to post a picture!
This is what Harold was telling you to do. The inner end of No 54 is offset to provide a cam type action.
Not sure what you are referring to as the lever fork