5-59. BUTTON SEWING MACHINE STOP MOTION SHAFT MAINTENANCE-continued.
(9) Loosely install crank adjustment screw (19) and adjusting screw nut (20). Set crank adjustment
screw (19) so that it does not stop the starting crank (12) and stop motion collar (13) from rotating far
enough to allow collar stud (1) from falling into the grove on starting crank (12). Tighten adjusting
screw nut (20).
Set timing (para. 4-49).