Carb Settings and Notes for '78 CB400A Automatic
Keihin Type VB 28mm
Carb ID VB24AA
Secondary Jet - 105
Primary Jet - 72
Idle Jet - 42
Fuel Passage Plug - Yes
Jet Needle - 13D
Needle Jet -
Float Height - 15.5mm
Air Screw - 2 Turn
Carb Settings and Notes for '79 CM400A Automatic
Keihin Type VB 28mm
Carb ID VB24BA
Secondary Jet - 110
Primary Jet - 65
Idle Jet - 38
Fuel Passage Plug - Yes
Jet Needle - 47B
Needle Jet -
Float Height - 15.5mm
Air Screw - 2 Turn