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Author Topic: air screw setting  (Read 775 times)

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Offline itsahonda4

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air screw setting
« on: September 29, 2020, 11:02:05 AM »
Hey all, finally have my 1971 Jap market CB750 running like a scalded cat, BUT the air screw/pilot is 2 1/2 turns out. The emulsifier holes on the main jet have been enlarged as per Hondaman's recommendations and everything else is stock....
Bike runs brilliantly and can keep up with my sons 69 with the no number pipes. Not bad considering its got 341 pipes on it.
So in my simple mind that air screw setting suggests I need to go one number larger on the pilot jet - T or F???
Al
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Offline 69cb750

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Re: air screw setting
« Reply #1 on: September 29, 2020, 01:09:59 PM »
Let bike idle for one minute then check plugs.
2.5 turns lets more air into idle circuit, if plugs are tan idle jet may be larger then original.
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Offline itsahonda4

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Re: air screw setting
« Reply #2 on: October 04, 2020, 05:37:58 PM »
yup, sorted it over the weekend, all goodly now.....
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Offline evinrude7

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Re: air screw setting
« Reply #3 on: October 04, 2020, 07:17:04 PM »
Quote from: itsahonda4 on October 04, 2020, 05:37:58 PM
yup, sorted it over the weekend, all goodly now.....

what was the fix? 
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cb750 k6 - ugly
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