Pawel , i don't see any adjustment orifice on the bracket of the shaft . To minimize the rotation of the rod at the pump i have shortened the rod to 230 mm , but it is still too long ! I am now scared to take as a start point :
233mm for the pump rod with not any rotation of the pump angle where the rod attach, and then adjust the other rods with the shaft in a new position.
Another problem: the pump lever is not vertical and the rod end is not neatly fitted at the pump junction. It works but not in a ideal angle ....( i have not any reference to compare with
I think i'll go in the Joe way:
233mm on the pump rod with no rotation of the lever as a start position , and then adjust the 3 other rods to the new position of the shaft