3 turns out?

[FastCletus]

just got the MAC 4 into 1 pipe.  Had some issues on previous post with install, but back in business now.  No other mods have been done on my CB750 F 1980, and now I am trying to dial in fuel screw settings.

What is a base line to follow?  3 turns out on each carb?  how do you adjust those screws being you cant really see underneath the banks, and you cant get a screw driver in there to determine how many tunrs you made?

[Lucky 1]

Get a small screw driver and paint a mark on it.
You count the number of turns.

3 turns out would be excessive in most cases and
the screw may be in danger of falling out.
I would go out 2 turns max.

Old indian Trick....

The BEST screw driver is a small screw driver that comes
 free in a package of Duracell batteries. The handle looks like a duracell battery.
The screw driver can be turned end for end and has a flat blade and a phillips.

[FastCletus]

Found an old eye glass screwdriver that work temporarlily.  2 out seems to be going in the right direction.  I was three threads out before.  
Now my question is which way do i go?  out or in?  and in what incraments?  1/2?  1 whole?

[motogrady]

gently take them all the way in, seat them, then count the turns out.

i'm not sure, but i think with pods you go way out, like 4 turns on a dohc.

mine were like that, 4 out, and was on pods, but the airbox was reinstalled
and it seems like 1.5 out on all 4 works.

keep us posted on what you do would ya?

[Hoosier Daddy]

In a nutshell,You need either a sensitive tach or a damn good ear. Take the screws to 1 1/2 out then slowly take each one out 1/4 or 1/2 turn until the idle speed quits rising, then slowly in until it drops, then back out to it's final set point... must repeat this process on each carb one at a time.
 Bitch of it is, the engine must be at opperating temp.... so you will need some gloves.
Read this... Factory service manual page 7-14

[TOOLS1]

Here you go.
http://www.dimecitycycles.com/vintage-cafe-racer-caferacer-bobber-brat-chopper-custom-motorcycle-tools-carburetor-pilot-screw-adjuster-08-0119.html
TOOLS

[Lucky 1]

Not three threads.

Three TURNS out - AFTER it is all the way in.

[FastCletus]

Oh I know now about the difference between 3 threads and 3 turns.  ;) 

Jimmy Clement

On Mar 24, 2013, at 9:51 AM, "Lucky 1 [via Honda CB750'S]" <[hidden email]> wrote:

Not three threads.

Three TURNS out - AFTER it is all the way in.

---

If you reply to this email, your message will be added to the discussion below:

http://honda-cb750-s.456789.n3.nabble.com/3-turns-out-tp4038339p4038383.html

To unsubscribe from 3 turns out?, click here.
NAML

[FastCletus]

I ended up buying the carb tool.  Found it on ebay for 20 bucks and free shipping.  Yeah I might only use it once, but what the heck if it makes this tune easier I am game.  It should arrive on Thursday so hopefully i Can ride this saturday or sunday.  Thanks for help

[wingman1946]

I have found it easier to pull the cover off of the starter (for vertical room) then just use a short screw driver.

[FastCletus]

tried your method. removing cover does add some space, but still a bitch to see with your hand up there.  Think I will just wait for my tool.  Cof course I need to get the new problem taken care of now, which is "why is cyl 2 and 3 not firing??  then I can fix carbs

[TOOLS1]

Might be a carb problem keeping 2-3 from firing. I once fought a number 2 cylinder not firing until 3K RPM. Turned out that the carb sync was off.
TOOLS