1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 251Get this manual
5Pull the throttle cable adjustment barrel (f) out of the holder6While holding down the throttle linkage arm (Step 4), position throttle lever (g) so there is 18 inch (3.2mm) gap between the top side of the oval shaped boss (d) and top inside surface ofthe carburetor cam (e)With the throttle lever atthis position, adjust barrel (f) on the throttle cable to fit into the barrel holder 18 in(3.2mm)