SOHC.co.uk Forums > CB750

Clutch drag

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hairygit:
Using heat may damage the oil seal in the casing, so be very careful going down that route! Probably better to try and stop the arm moving forward while undoing the locknut, for example using a pair of mole grips to hold the arm still.

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MarkCR750:
Yeah I was using a soldering iron directly on the nut, so far I've tried penetrating oil, heat, filing off the burrs at the edges of the slot on the screw thread, very gently tapping the sides of the slot towards the centre of the thread in case it's splayed outwards, making a screwdriver bit to perfectly fit the slot, it's sunny though so stuff it I'm off for a ride, I'll try immobilising the arm when I get back later cheers.

Chris400F:
If you get the lock nut sorted the adjustment procedure is described in the CB750 Shop Manual in the Cb750 mega download in Ash's Dropbox (p183).
It might not solve your problem but at least it will tell you how Honda says it should be set.

Greebo:
if you going for a ride might see you at CMC clay cross, I will be there later around 12.30 / 1pm ish

MarkCR750:
Ok I had 1 last go, wedged the arm with ally blocks, success, I was being an idiot trying to stop the shaft rotating with the screw slot, anyway I've turned it in three quarters of a turn and clutch drag is gone, I'll get off for a ride now and see if the clutch slips cos 3 quarters of a turn is probably a lot , thanks Hairygit for saying immobilise the arm.

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