Honda BF35A-BF45A Outboard Motors Shop Manual., Page 446Get this manual
SHIFT CONTROL CABLE ADJUSTMENT 1) Disconnect the shift control cable from the shift arm
2) Set the shift lever in the "R" (reverse) position and
check whether the click roller is in the "R" position of the shift link B
5) Set the shift lever in the "Nu(Neutral) position and move it couple of times back and forth within the range of free play (see page 12)Set the shift link in the "N" (Neutral) positionAdjust the shift control cable length so its pivot shift can be installed on the shift arm smoothlyAfter adjustment, tighten the lock nut securely (see page 12)6) Connect the shift control cable to the shift arm and tighten with the mm washers and mm lock pin