Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 361Get this manual
1 CONTROL CABLE SELECTION
1) Select mounting location which allows easy access and unrestricted operation of the control lever, and
make sure that there are no other parts obstructing the cables and all components between the remote control box and the outboard motor
The remote control box is normally mounted on the starboard side, but can be adapted to reversed control lever position (port side installation)Recommended position to install the control is close to the corner of the front seat with the control lever in the "Nu (NEUTRAL) positionThe bottom of the remote control box should be at the same level as the upper surface of the seatInsert shim between the box and the installation surface, the play of the operating lever is insufficient2) Determine and select the remote control cable length
NOTE: The bending diameter of cable must never be less than 400 mm (16 in)If the cable is routed in tight arc, resistance on the control lever will increase, and smooth throttle operation is no longer possibleThis may lead to loss of control over the craftThe cable length must be calculated in such way that an unrestricted operation is possible, even if the outboard motors are tilted or turned to one sideIf the cable length is insufficient, the cable must be replaced with the one that has correct lengthInstallation Example