SOHC.co.uk Forums > CB500/550

CB500 K0 Carb Needle Jet settings

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bike addict:
Hi. Would anyone have any advice for what groove the standard needle jet setting is please for my CB500/4 K0? It runs all all original carbs, pipes, air box and filter. My original Honda owners manual and all the other references I have seem to omit this detail. Your help much appreciated. Many thanks.
Martin
South Coast Sussex

hairygit:
As a rule, Honda set them to the middle notch.

Sent from my D2303 using Tapatalk

Johnwebley:
I recently re-built my 500k2 carbs,

  I think they were still original settings,all 4 needles were 1 slot above the bottom slot,

Bryanj:
Standard is middle groove

deltarider:
Standard is 3rd (middle) position. An American Honda Motor Company spec. booklet (1977!) is the only source that recommends 4th. On the same page it recommends to have the airscrews 2 turns out instead of the 1 +/- 1/8 documented everywhere else. If that information is true, my guess is that US was interested in a less polluting idle and compensated this by bringing the needle a bit higher. FWIW.

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