Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 369Get this manual
3) With the control lever in the "N" (Neutral) position, be sure that the pivot roller center is in alignment with the alignment marks on the throttle camPIVOT ROLLER
SHIFT CONTROL CABLE ADJUSTMENT
1) Disconnect the shift control cable from the shift arm
ALIGNMENT MARKS
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 CLICK ROLLER
THROTTLE CAM
THROTTLE ARM
3) If the click roller is out of the specified position, loosen the lock nut on the shift rod and adjust by turning the adjusting nut until the click roller comes to the "R" position of the shift link B4) After adjustment, tighten the lock nut securely
SHIFT ROD