SOHC.co.uk Forums > CB750
re-jetting needed?
philward:
I think its 6mm slot head m5 thread -
99-101-393-SIZE
https://www.catalyst-findit.co.uk/index.php?c=2f74fd408728adaf828b5b9373baedbb&w=900&nav=r&h=n&rpp=100&dest=listing&p=38
- this is based on me going to the garage to measure up spare set whilst under influence of a few pints whilst watching 'Chic' on Glastombury (after having 4 grandkids overnight!)
Seriously, I think that's correct but if you ring them to order, they should be able to confirm
Phil
El__burro:
thanks Phil.
i have just ordered the 122 (+5) size.
hopefully this will help.
i'll update this post once i receive and test ride.
Thanks a lot
el__burro
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El__burro:
After swapping the 110 jets with the 122 i have immediately noticed a worsening in performance. Struggling in every gear until a few miles later it almost stopped running.
Carbs are popping tiny explosions..
Plugs Check, very dirty with carbon.
Any idea
el__burro
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K2-K6:
That's showing way too rich, as if the choke is on. I'm not saying the choke is applied, just that the plugs would look like that if you did use it.
Will it start when cold with no choke?
It just looks way out from that colour and needs to be run leaner.
Did you have a comparable plug colour on the old settings, if so what did it look like?
hairygit:
Popping through the carbs is often caused by air leaks, check that the clamps on the carb rubbers are going tight enough. As regards looking on the rich side, what setting are the needles at? Try dropping them a notch after thoroughly cleaning the plugs, or fitting new ones, then see how it is.
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