CB350F Four Cylinder '71-'74 KeiHin Mechanical Slide
These carbs are basically the same for all years of the CB350F four cylinder. Marked 656C and almost exactly the same as the CB400F Super Sport with the 054A marking. Erosion of the main jet tube of the body is the big killer of these carbs. If the jet tower is too damaged the main jet will never work correctly as it is a o-ring sealed jet.
Below is a set of '72-'74 CB350F Four Cylinder 656C carbs with a before picture of the same finished set below.
