Honda Outboards BF40A/BF50A Service Manual, Page 338Get this manual
BF40A-BF50A -TUBES
1) Install the following:fuel tubes- air vent tubes, joint pipe and tube joints- vacuum tube- tube clips- vinyl tube
[1 AIR VENT TUBE (3) (4.5 93 mm)
[2J VACUUM TUBE (3) (3.5 45 mm)
[3] AIR VENT TUBE A
INSTALLATION; P5-12
3WAY JOINT (2)
[4] TUBE CLIP B10
[5] JOINT PIPE
[23] AIR VENT TUBE C
VINYL TUBE (4.5 160 mm)
[22] AIR VENT TUBE B