Honda Outboards BF40A/BF50A Service Manual, Page 322Get this manual
BF40A-BF50A 11) Remove the two mm cap nuts and five 32 mm flange bolts, then remove the carburetor and manifold assembly from the crankcase
CARBURETORIMANIFOLD ASSEMBLY DISASSEMBLY: P5-5 ASSEMBLY: P5-9 INSTALLATION: P5-13