SOHC.co.uk Forums > CB500/550
Any idea what this is?
beardylondon:
Here are some photos, I know it is painted the wrong colour, it was like it when I bought it!
deltarider:
Oddjob got it. Unfortunately I cannot consult the Parts List CB550, CB550K1, CB550K2 right now, because the Honda4Fun site has been down for weeks now, but if you go to p.170 of the Shop Manual Honda CB500-550, you'll find the specifics of the CB550K2 or K76 as it is also named. It's about the rerouting of the breather tube. It has puzzled me for years because as far as I know the K2 was for the US only and they had the breather tube connected to the airfilter case. So the bracket has no use, unless... the K2 was also destined for other countries (Asia? Japan itself?) that are not documented in the sources we have.
beardylondon:
So it’s basically pointless on my bike?
deltarider:
Well... if it was my bike, the first thing I'd do, is to undo that blow-by gas route and reroute as is shown in p.170. Recently on the German forum an owner had connected the breather to the air filter case, but was alarmed by how quick the air filter element got wettened/fouled. When the CB550F2 was tested in Germany, Das Motorrad (which is the best motor mag in the world IMO) had also noticed that connection could be problematic. At the time, they have cured it by having the oil no higher on the dipstick than halfway the upper and lower mark. Your choice, but keep an eye on the airfilter element if you choose to maintain the blow-by gas route to the air filter case. I've seen quite a few CB550K3s that had that typical soft (wettened) spot in the airfilter element...
beardylondon:
I’ve got no idea what you are on about! Also I don’t have the workshop manual, so page 170 is meaningless to me. I’ll just carry on and hope for the best! ;D
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