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Honda CB750k2 main jets

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Pauarc:
I have been reading up on the main carb jet for my bike they have been fitted with 120
When looking at info I think it should have 110 the carb are 657b all the plugs are on the rich side could this be the course.The float are set at 26mm slow jets 40 air screw 1and1/2 standard air filter HM341 exhaust Middle slot on needle

Trigger:
All my CB750 K2's 1972, 1973, have had 657A carbs with 110 main and 40 slow. Yours is a later K2 so, 657B carbs are the original ones  ;)

Pauarc:
Why would someone fit 120 when they should be 110 I have now fitted 110 but have not been for run yet

Trigger:
Maybe some one changed the needle's to suit a 120 jet. I had K271307 needles with 110 jets and it had trouble on tick over.
Changed to K27201 and it ran fine  ;)

Pauarc:
I didn’t think the needle would effect the tick over all I no they’re on middle slots it rev from tick over ok sits at about 1000 to 1100 will have to see what its like when I get out for a run

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