Honda Outboards BF40A/BF50A Service Manual, Page 255Get this manual
HONDABF4DA-SDA
2ACCELERATION DEVICEDIAPHRAGM ASSEMBLY
Adjust the acceleration devicediaphragm assembly after adjusting the idle speed (P3-8 of the base shop manual [66ZV300J) 1) Loosen the 16 mm torx bolts using the special tools
[1] 16 mm TORX BOLT 121
[2] TORX BIT HANDLE 077030010300
TOOLS: orx bit handle
077030010300
SCREW T30H 07703-0010600 _
TWRnTTl F
2) Remove the throttle rod from the throttle cam3) Move the throttle cam and hold it in position where it does not contact the throttle cam roller