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Camchain tension

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AshimotoK0:
Julie.. I can't understand why the camchain tensioner  designs  on the 750,  500/550 and 350/400/4 were totally different arrangements.  You would have thought they would have stuck to one design. The 750 is very similar to the CB250/350K design. Not sure which was the most successful. 500 at a guess but Trig will know.

Johnwebley:
I read somewhere that if you turned the screw. It took the bend out of the blade..

Is it true?

Sent from my SM-A750FN using Tapatalk

Nurse Julie:

--- Quote from: AshimotoK0 on April 24, 2020, 04:18:45 PM ---Julie.. I can't understand why the camchain tensioner on the 750,  500/550 and 350/400/4 was totally different arrangements.  You would have thought they would have stuck to one design. .The 750 is very similar to the CB250/350K design. Not sure which was the most successful. 500 at a guess but Trig will know.

--- End quote ---
Well it certainly wasn't the 400/4 Ash that was the most successful, that's for sure 😁😁😁😁. I never hear anyone having issues with 500/550/750 tensioners so that is why my head automatically only thinks of 400/4 and as a second thought it would be 350/4's 😊😊😊

Safo:
Thanks for the advice folks, confession time, I did give the bolt a couple of light taps with a screw driver handle, only light taps.
I've been turning her over to set the tappets, I suppose all I can do is retry tensioning before starting and hope for the best, forgot to mention,new camchain fitted when I had the cases split

deltarider:

--- Quote from: AshimotoK0 on April 24, 2020, 04:18:45 PM ---Not sure which was the most successful. 500 at a guess...

--- End quote ---
Many bikes of that era had troublesome camchain tensioner designs.
CB500/550 owners are advised to have a look at this video shot by René van Maanen of Honda4.nl. It gives you an idea how the tensioner works and why you will not even see the bolt turn when you loosen the locknut to let it adjust. It will move just a fraction. Also do not expect a wonderful humming engine after adjustment. You will always hear the camchain.
Mind you, the vid does NOT show how to do the adjustment, it only demonstrates what goes on.To adjust, either do it by the book or like Bryan.
I do NOT recommend to do it with a running engine like Honda's Owner's Manual CB500K3-CB550K3 suggests.
https://www.youtube.com/watch?v=8qJc6e5pa8M
Courtesy Renë van Maanen - Honda4.nl

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