Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 359Get this manual
SHIFT CONTROL CABLE ADJUSTMENT 1) Disconnect the shift control cable from the shift arm
5) Set the shift lever the "N" (Neutral) position and
move it couple of times back and forth within the range of free play (see page 14)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 14)6) Connect the shift control cable to the shift arm and tighten with the washers and lock pin
2) Set the shift lever in the "R" (reverse) position and check whether the click roller is the "R" position of the shift link B