What is the fuel capacity of a CB550K / CB550F / CB500K? November 06, 2018 05:35 CB500K: 3.7 US gal., 14.0 lit.CB550K & CB550F : 3.7 US gal., 14.0 lit.CB550 (K3-K4): 3.4 US gal., 12.9 lit. Related articles What fuel should I use in a CB550K / CB550F / CB500K? Honda CB500 and CB550 4-Cylinder Factory Service Manuals What brake fluid should I use in my CB550K / CB550F / CB500K? How to set the ignition timing on the Honda CB500K / CB550 What are the carburetor stock size jets for my Honda CB550K / CB550F / CB500K?