2 different needle jet holders on my CB77 carbies .

[JayC]

Hi all .
I have just discovered the 2 needle jet holders on my 1964, CB77, PW26 carbies are slightly different in the arrangement of small holes on the tube section . One needle jet holder has the extra 2 holes in line with the top pair of three holes while the other has the extra 2 holes in line with the bottom pair of three holes . I can find no identifying markings on either needle jet holder which does not help .
Anyway looking in my Honda parts book dated 10th October 1966, the needle jet holder for the right carby is p/n 16139-273-004 while the same item listed for the left carby is p/n 16139-274-004 .
Can anyone clarify this for me please .

Many thanks ........JC .

[LOUD MOUSE]

My parts book, August 1968, CB77, shows the same numbers for both.===16139-274-004
As I've rebuilt as many of the CB and CL carbs as I have I noticed many years back that the CB had the holes you describe at the bottom and the CL at the top.
How would I remember this is simple.
CB is at BOTTOM!.
Hope this helps. .........lm

Hi all .
I have just discovered the 2 needle jet holders on my 1964, CB77, PW26 carbies are slightly different in the arrangement of small holes on the tube section . One needle jet holder has the extra 2 holes in line with the top pair of three holes while the other has the extra 2 holes in line with the bottom pair of three holes . I can find no identifying markings on either needle jet holder which does not help .
Anyway looking in my Honda parts book dated 10th October 1966, the needle jet holder for the right carby is p/n 16139-273-004 while the same item listed for the left carby is p/n 16139-274-004 .
Can anyone clarify this for me please .

Many thanks ........JC .