F1 or F2

[Glynnrg]

Recently bought a 1977 cb550f in bits has frame number 1027134 and engine number 1142210
Some of the parts are duplicated but some look they could be from a f1 and some from a f2  I though because it's a 1977 it would be a  F2 but now not so sure anyone got any ideas
Thanks

[Glynnrg]

this is the problem ive got tank isn't from a f but one of the ther cb models not sure which as the petrol cap protrudes from the top of the tank with no lock unlike the flush one on the f also have two sets of headlight ears one that accepts gaiters one set that doesn't?

[Chris400F]

This is from the US site. There looks to be a digit missing in a couple of the numbers but your frame at least seems to be F1.

Model  Model Year  Starting Frame #   Starting Engine #
 
CB550 F1  1975     CB550F-1000002-  CB550E-110004-
CB550 F2  1976     CB550F-2000003-  CB550E-1109887-
CB550 F3  1977     CB550F-210001-    CB550E-1135380-

I seem to recall the F1 came in orange or a metallic turquoise colour. Details here: http://www.sohc4.net/cb550-model-guide/

[Glynnrg]

thanks chris I did see this site are the usa frame engine numbers the same as the uk bikes as my documents don't tell me my bike is an import?
this info also seems to be slightly different to what cmsl say on their website?

[Chris400F]

Fair comment.
In the front of the printed Parts List I have for the 400/4 (but not in the version in Ash's Dropbox on here) is a table with starting engine and frame numbers for different models and markets. I don't know if there would be something similar for the 550; I guess it must exist somewhere.

[deltarider]

Forget about the F3, there never was one. Consult the first pages of the CB550F parts lists, where engine- and framenumbers are listed. http://www.honda4fun.com/materiale-documentazione-tecnica/parts-list/parts-list-cb550

[Glynnrg]

Thanks guys the clocks are green with the trip reset knob at the back of the clock? But the bits could b from anything as they where in boxes