• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Broken Mixture Screw Tips

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
While cleaning the carburetor, I discovered that two of the mixture screw tips had lodged into the holes, and have broken off inside them. They're way down in the bottom, in the metal that separates the throat from the channel that the mixture screws go in.
It's the #3 and #4 carbs that have this issue.

What can I do to extract them?
 
Big T said:
Check the Basscliff site for the tutorial
Click to expand...

I did. I think those are BS carbs they show Mine are CV, there's no access straight to the hole. It's a 90 degree angle. 1592007194516477013747336113456.jpg
 
Last edited:
ZombiePotatoSalad said:
I did. I think those are BS carbs they show Mine are CV, there's no access straight to the hole. It's a 90 degree angle. View attachment 61205
Click to expand...

BS carbs are CV carbs. The mixture screws don't go through any 90 degree turn. The screws go straight down from the top and through to the inside barrel of the carb through that hole that looks like it's been prodded over and over. You can extract that by using a piece of bristle from a steel scratch brush like this one.:
1VAF5_AS01


https://www.grainger.com/product/1V...kwcid=AL!2966!3!281698275243!!!g!471333877888!

You can find them most anywhere.

You just cut off one bristle and poke it up from the barrel towards the mixture screw inlet. Helps to use a pair of needle nose pliers to hold the bristle.
 
JTGS850GL said:
BS carbs are CV carbs. The mixture screws don't go through any 90 degree turn. The screws go straight down from the top and through to the inside barrel of the carb through that hole that looks like it's been prodded over and over. You can extract that by using a piece of bristle from a steel scratch brush like this one.:
1VAF5_AS01


https://www.grainger.com/product/1V...kwcid=AL!2966!3!281698275243!!!g!471333877888!

You can find them most anywhere.

You just cut off one bristle and poke it up from the barrel towards the mixture screw inlet. Helps to use a pair of needle nose pliers to hold the bristle.
Click to expand...

No, I'm saying the only thing that I saw on BassCliff's website showed a person using an awl to go straight down, perpendicular to the barrel, into the hole. I can't do that with my carbs.
As for poking something into the hole, would a sewing needs or pushpin work, or does it have to be one of those bristles? I tried it with a pushpin, and that just bends.
 
Last edited:
You can make your own tool by bending the tip 90 degrees on an awl or pick. If there is a harbor freight in your area it might be worth a trip to see what kind of tools you can find.
 
I have one. However, the remains of the tip seem to be wedged tight.
I froze it for a day, and that didn't help. No I'm going to try boiling them next.

Got some distilled water, boiling them now.
 
Last edited:
No harm in worrying a bit, before action, Zombie^^^that's a good caution. The needle tip itself is probably brass and itself being a point, though it is flattened and not super sharp, to push on it directly outward the "pusher" tip need suit the diameter of the hole closely and not be "sharp"
it'd be better if the tip of the pusher is squared off-so you are pushing a "rod" against the broken needle's tip.

Those cheapie probes are useful for lots of things but their toughness is questionable... I'd go for the wire brush bristle if it suits the hole closely...Grip them up close to the hole so it doesn't bend.
 
Based on this pic:
attachment.php
=

I'd say you've done a pretty good job at damaging the mixture screw jet tip. It may be buggered up enough that it will no longer pass through the opening backwards. I don't see any "tip" protruding down anymore. You may need to lightly sand the surface in order to remove the mushroom effect that's present. As others have stated, you need to extract the top by pushing directly on the center of the tip and not around it. Be cautious of using anything that will enlarge the opening as that will effect the tune.
 
The tip is no longer visible on one.
I think I pushed it down a bit, but it's still stuck.
The scratch marks were from the pick sliding as I pushed down on it. The pick also seems to have enlarged the hole a bit.

I think I'll take them to the local motorcycle repair shop tomorrow, see what they can do. I haven't been able to extract the tips myself, and I'm worried I'll screw it up more than I already have.
 
Last edited:
Good luck with the motorcycle repair shop. Most won't do the work and if they do will charge you a ton of $$$$.
 
You must log in or register to reply here.
Back
Top