Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 108Get this manual
Quality of the image is intentionally reduced!
IVDISASSEMBLY AND SERVICE 1CARBURETOR 2CYLINDER HEADVALVES 3CRANKCASE
ASSEMBLY: Clean thoroughly with compressed air before installationMAIN JET
#75 (see P3) #78 (see P3)