Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 355Get this manual
Throttle Cable Adjustment and Installation to the Outboard (Continued) 56Lock cable barrels in place with cable retainer (d)Check preload on throttle cable by placing thin piece of paper between idle stop screw and idle stopPre-
Connect battery cables (from engine) to batteryConnect positive (+) battery cable to positive terminal and negative (-)battery cable to negative (-) battery terminal
load is correct when paper can be removed without
tearing, but has some drag in itReadjust cable barrel
if necessary
Battery Connections
A CAUTION