Honda Carburetor Specifications
U.S. Four- and Six-Cylinder In-Line Models
1969-1983

Year	Model	Casting #	Type	Float	Main	Slow	JN	Screw
72-74	CB350 Four		1	21mm	75	35	3	7/8
75-77	CB400F	054A	1	21	75	40	3	2
71-73	CB500 Four	022A	1	22	100	40	4	11/2-2
74-76	CB550K		1	22	100	38	4	11/2
77	CB550K	X46A	2	14.5	90	38	3	11/2
78	CB550K	PD46C	2	12.5	90	42	NA	11/2
75-77	CB550F	069A	1	22	98	38	2	11/2
79	CB650	PD51A	1	12.5	92	35	NA
80	CB650		1	12.5	90	35	NA
81-82	CB650/C	VB44A	4	15.5	120	35	NA	21/2
82	CB650SC	VB44C	4	15.5	118	35	NA	11/2
69-76	CB750K	B750A & 7A	1	26	120	40	3	1
		657A	1	26	110	40	4	1
		657B & 086A	1	26	105	40	4	1
77	CB750K	41A	2	12.5	115	35	1	11/2
78	CB750K	PD42B	2	14.5	110	35	NA
79-81	CB750K/C	VB42A	3	15.5	68/102	35	NA	11/2
82	CB750K	VB42AG	3	15.5	68/102	35	NA	11/2
81	CB750C	VB42A	3	15.5	68/102	35	NA	11/2
82	CB750C	VB42G	3	15.5	68/102	35	NA	11/2
82-83	CB750SC	VB42AG	3	15.5	68/102	35	NA	11/2
75	CB750F	B750A & 7A	1	26	105	40	3	1
		657A & 657B	1	26	105	40	4	1
76	CB750F	069A	1	26	105	38	2	1
77	CB750F	PD41B	2	14.5	105	35	2	1
78	CB750F	PD42A	2	14.5	105	35	NA
79	CB750F	VB42B	3	15.5	68/100	35	NA	11/2
80	CB750F	VB42B	3	15.5	68/98	35	NA	11/2
81	CB750F	VB42B	3	15.5	68/102	35	NA	11/2
82	CB750F	VB42AG	3	15.5	68/102	35	NA	11/2
75-77	CB750A	PD44A	2	14.5	102	38	3	11/2
78	CB750A	PD43A	2	12.5	108	38	NA	11/8
80	CB900C	VB43A	3	15.5	68/105	38	NA	21/2
81-82	CB900C	VB43B	3	15.5	68/105	38	NA	21/2
81	CB900F	VB43C	3	15.5	68/105	38	NA	21/2
82	CB900F	VB43C	3	15.5	68/105	35	NA	21/2
83	CB1000C	VB55A	3	15.5	68/110	35	NA	21/2
79	CBX	VB60A	3	15.5	65/98	35	NA	11/2
80	CBX	VB62A	4	15.5	110	35	NA	11/2
81-82	CBX	VB64A	4	15.5	105	35	NA	11/2
83	CB1100F	VB56A	4	15.5	122	38	NA	2

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Mike Nixon