Knocking in the primary case

Nortorious · Jun 5, 2021

gortnipper said:
Section C41

https://nortonmotorcycles.org/media/manuals/750_man.pdf

Note this covers both 750/850 models.

Exactly what I needed. I see you noted C41 earlier and I just missed which manual. Thanks so much.

Thank you all for pointing out the other locations with info! I should get this sorted today. Then it's on to the carbs again.

Nortorious · Jun 5, 2021

L.A.B. said:
"Chapter 2/Gearbox", section 13, "Primary chain - examination, lubrication and adjustment" of my Haynes copy.

Also, Riders Manual, "Transmission" section.

http://www.classicbike.biz/Norton/OwnersManuals/70s/73Commando-OwnerMan.pdf

Sure enough there it is. I was looking in primary case instead of gearbox. Thanks!

Nortorious · Jun 13, 2021

So the knocking was indeed the primary chain. I tightened it and it went away, but the chain was too tight. There seemed to be very little difference between loose and slapping and too tight. I eventually got it, but lots of trial and error. Mostly error.

gortnipper · Jun 13, 2021

Nortorious said:
So the knocking was indeed the primary chain. I tightened it and it went away, but the chain was too tight. There seemed to be very little difference between loose and slapping and too tight. I eventually got it, but lots of trial and error. Mostly error.

its just like, "its always in the last place you look".

Knocking in the primary case

Nortorious

Nortorious

Nortorious

gortnipper

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