SOHC.co.uk Forums > CB500/550

stiff clutch

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K2-K6:

--- Quote from: neat street on October 07, 2025, 03:41:51 PM ---K2-K6, nothing that thin, but for test purposes, I could use a coke tin?? will try tomorrow if possible,
thank you for the idea

--- End quote ---

Yes, should do the job to let you try it.

neat street:
Hi All, made a bush from 22mm copper pipe and got down to a good size to test, smooth to operate the adjuster free hand but although maybe a very slight improvement, the problem persists :-(
see pics  and home made bush.
Any other ideas or are we stumped?

K2-K6:
My experience in regard to cable lubricant is likely at odds with some, ordinarily using silicone oil for them to good effect.

It's, essentially, inert with generally used materials in bowden cable installation. Effective in lubricating, precludes water ingress and offers no (that I've experienced) downside.

Worthwhile to evaluate in this case, as slightly puzzling it is.

Oddjob:
In my experience the cause of most problems on the 500 clutch setup is the cable routing. It must follow the diagram in the PDI instructions. Does yours do so?

Have you checked the operation of the mushroom in the clutch basket as well? Just to ensure it’s moving freely.

McCabe-Thiele (Ted):
You will have checked the below items I'm sure, just trying to think outside the box.

You have not mentioned the end ball bearing, does it have one?

Is the brass screw adjusted and locked in with the pinch bolt?

Is it a genuine clutch cable, or the correct length if its aftermarket?

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