Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 241Get this manual
TILLER HANDLE
5Route throttle cables to carburetor and secure with j-clip6Slide throttle cable ends into throttle drumSecure throttle drum with bolt7Place end of throttle cable jackets into retaining bracket8With throttle arm of carburetor against idle speed screw, remove slack from throttle cables with adjustment nuts