Honda Outboards BF40A/BF50A Service Manual, Page 342Get this manual
BF40A-BF50A 8) Insert the vinyl tube ends into the holes of the engine under case[1] VINYL TUBES
ENGINE UNDER CASE
9) Connect the throttle rod to the throttle cam10) After installation, adjust the throttle linkage (P3-5)11) Install the removed parts in the reverse order of removal