Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: bluemouse1006 on June 09, 2012, 05:54:52 PM

Title: Carb needle heights ??
Post by: bluemouse1006 on June 09, 2012, 05:54:52 PM
 :)
Hi been on my bike today , my mate told me when he followed me my bike really smelt rich , I've replaced all the jets and needles in all 4 carbs . I have adjusted the air screws ( screwed all the way in and then out until the idle picks up ) this was about 2.5 turns out ..
I fitted the needles on the second slot from the top like the old carbs were . Any one know if this is about right ?
If I was to drop it a slot would that make it better ? Runs fine when warm but a pig when cold ( see my other topic) how far should you screw those air screws out is 2.5 too far ?

Cheers again

Amos
Title: Re: Carb needle heights ??
Post by: Spitfire on June 09, 2012, 07:23:04 PM
I can't remember where I got this (probably from the US site) but it might help.

Cheers

Den

(http://i192.photobucket.com/albums/z244/DennisMcc/CB750CARBURETTORSPECS.jpg)
Title: Re: Carb needle heights ??
Post by: mick on June 09, 2012, 08:24:17 PM
Hi Amos put the clip in the middle slot & set the air screw as show on the chart Den has posted  ;), cheers Mick.
Title: Re: Carb needle heights ??
Post by: bluemouse1006 on June 11, 2012, 12:58:11 PM
Cheers

I'm going to look at the plug colour before having a task and a half stripping the carbs
Just a quick one is two slots down in the middle anyway ? It ll save me stripping if that's the case.

Thanks again

Amos
Title: Re: Carb needle heights ??
Post by: Spitfire on June 11, 2012, 07:54:57 PM
Here's a nice discusion of the subject from the US site.
http://forums.sohc4.net/index.php?topic=63177.0

Cheers

Den
Title: Re: Carb needle heights ??
Post by: bluemouse1006 on July 06, 2012, 09:00:03 PM
Stripped my carbs again and set the needles to the middle ,
Sinced the carbs with gauges and set the bleed screws to 1 turn out ..
Starts from cold a lot better and runs well sweet now . What a difference it's a joy to ride now ( should be as I've replaced everything for new ) its like triggers broom !!!

Cheers Amos

Title: Re: Carb needle heights ??
Post by: mick on July 06, 2012, 09:06:53 PM
Nice  cyril  8)
Title: Re: Carb needle heights ??
Post by: Spitfire on July 07, 2012, 12:09:16 PM
Glad to hear that it turned out right.

Cheers

Den