Author Topic: CB750K5 Air screws  (Read 5586 times)

Offline royhall

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CB750K5 Air screws
« on: March 22, 2024, 03:36:27 PM »
Just wondering what the opinions are on this. The Honda manual for the CB750K5 says that the air screws should be backed out 1 turn +-1/8. I have in the past had to go to 2 turns out to get a 750 running correctly. Some of you have far greater experience of the 750 than me, just wondering what you think. Cheers.
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Online Pauarc

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Re: CB750K5 Air screws
« Reply #1 on: March 22, 2024, 03:47:02 PM »
Got me mixture set at 1 3/4 give me a good plug colour
Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,

Offline Martin6

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Re: CB750K5 Air screws
« Reply #2 on: March 23, 2024, 04:59:17 AM »
I'm at 1 turn out. Slightly sooty if I'm caught in traffic or just idling, but nice colour when I've been on a run.

I live up twisty country lanes, middle of nowhere. I'm not able to run the bike on brand new plugs, WOT for a mile, then hit the kill switch, to do a proper plug chop. I've used plug condition as just a bit of a guide if I'm experiencing problems, like hesitation, flat spots etc. So, if you're running nicely at 2 turns out and plugs are happy between services, personally, I'd call that a 'win' and leave well alone  :)


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