Re: 1978 115 mercury need help on disconect of cable
The throttle cable (Top) comes off first. Remove 7/16 nut that holds cable end to throttle arm. Open the barrel nut clamp, by gently lifting on on the tee handle and swinging it in, up and out. Now pull out the flat part of the clamp. The shift cable end must first be unfastened (7/16" nut) from the shift slide. Just loosen the nut and push the aluminum clamp toward the engine block. The cable end should just clear. Now you may remove it's barrel nut end.