Besides describing the '77 as an F3 in the first chart, and only one picture out of place, that model guide's descriptions are actually quite accurate.
I count at least three errors so I wouldn't call it 'actually quite accurate'. It's enough to qualify it as corrupt data, as is the Shop Manual presented in this site (two important pages missing) as is the wrong carburetor scheme presented here over and over again. Why even bother to look at such 'guides' if you can have the original info from... Honda?
Denominating models in years is an American consumers market thing. It doesn't reflect reality. Sometimes the same model is sold in more than one year and sometimes a newer model is launched in the same year as it's predecessor. Focussing on years leads to confusion. Where is the CB550F3 in the real world? Nowhere. Where is the CB550F that exists in the real world in that model guide? It isn't there. All this is the result of trying to denominate models in years. It's useless and leads to confusion, like when you have to service the clutch plates for instance.
