SOHC.co.uk Forums > CB750

Dragging clutch

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Scottvincent:
Hi
No, the bike does not have the double plate. I’ll post some photographs tomorrow after I’ve pulled the clutch out.

Thanks to all.

Scottvincent:
Hi
As promised, some photographs of the clutch assembly.

Scottvincent:
More photographs

Scottvincent:
I would be more than happy if anyone can spot some obvious fault, I’m running out of ideas.

Thank you.

hairygit:
Well, what leaps out at me are the friction plates. In every F1 I have ever done the clutch on, only the outermost plate has the tangential slots on it, all other plates had conventional slots. There should also be a double thickness metal plate in there as well, basically 2 rivetted together. I can't say for certain if all the fibre plates having tangential slots is the cause of your issue, but I've never seen it like that before. Also, with a 40+year old bike, there is always the risk of things being incorrectly assembled by a previous owner, so replacing something exactly the way you found it can also be fraught with problems. It may even be the reason it was parked up years ago, something incorrectly assembled and the owner got fed up with it!

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