SOHC.co.uk Forums > CB750
Carb jet sizes
neat street:
Thanks again, Odd job, I will check out the jets for the 500, but first will lift the clip up one above the centre and re balance the carbs before I change the jets
Thanks again to the knowledge you all pass on.
John
Bryanj:
I think yours are the screw in type whilst the 500 has push in, Sirius in canada sell "Sets" of jets in assorted sizes
neat street:
Thank you all for your help, Adjusted the needle and now runs a lot better with no coking! This has now created another issue, as well as one that I had before, but not mentioned maybe you can help please?? (new problem) When I let go of the throttle, the engine takes its time to slow down? I am thinking this would mean re-setting the idle jets (set at about 1 3/4 to 2 turns out at present),(old problem) and when starting from cold I have to re-set the engine speed (Increase the speed by the adjusting thumb screw, (1500 revs) when it gets warm/hot it then revs at 3000 so have to adjust again. Any ideas, apart from that, its running well.
Thanks again for your help and input.
John
MarkCR750:
I read a while back that "hanging" revs , i.e. when you shut the throttle it takes time for the revs to drop means it's running lean.
PS anyone needing jets might want to try NRP (nrp.carbs.co.uk) Tel 0161 832 8646, I bought a set of mains from them today, £4.24 each, that's half the David Silver price, also they are carb specialists and can offer advice.
SteveD CB500K0:
Mark, can you post this in "Recommended Sources for Parts..."
It will be safe there (but disappear down the list on here)
Steve
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