Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 491Get this manual
THROTTLEISHIFT LINKAGE
5Push in on the cable end until resistance is felt
6While pushing in on the cable end, adjust the cab le barrel to attain the measured distance taken in Step 31:::::1:1:::::1 ::::.1:::::1',.1:::::1 .1:::::1,::::1 ':