• 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.

Help identifying a part

  • Thread starter Thread starter skidded
  • Start date Start date
S

skidded

Guest
Hey all-

A friend of mine is helping me clean and rebuild my carbs. So far we're about halfway there (we were side-tracked by beer). It's coming along well (http://img49.imageshack.us/my.php?image=halfcleanjd6.jpg), but I need to order a couple more parts and am having a tough time figuring out what one of 'em is.

The next picture shows the pre-cleaned parts, and I got all of them except the one marked with '???':

http://img476.imageshack.us/my.php?image=unknownwq6.jpg

I tried looking it up on the parts diagram and the Clymer guide, but it doesn't seem to be listed anywhere (http://img400.imageshack.us/my.php?image=1977gs550carbdiagramkc7.gif). It's not covered by the float bowl when it's reattached and remains accessible. Here's a closer look:

http://img476.imageshack.us/my.php?image=closeupdq3.jpg

I could probably clean it and might only have to replace the o-ring, but I want to know which one to get. If the part is cheap enough, I'd just get one fresh.

As always, any assistance you can provide to identify would be greatly appreciated.

Thanks,
Scott
 
Last edited:
Looks like a pilot fuel screw. Used to adjust the low speed fuel mixture.
 
chiphead is right, it's the pilot screw (sometimes called pilot fuel screw). If you go to the Carb Rebuild on this site, there are lots of pictures of this screw (with a terminology problem).

The pictures of the pilot screw are misnamed "air screw". It meters fuel, not air, so just substitute the correct name and you'll have lots of pictures and information.
 
Boondocks said:
chiphead is right, it's the pilot screw (sometimes called pilot fuel screw). If you go to the Carb Rebuild on this site, there are lots of pictures of this screw (with a terminology problem).

The pictures of the pilot screw are misnamed "air screw". It meters fuel, not air, so just substitute the correct name and you'll have lots of pictures and information.
Click to expand...

Thanks all-

My problem is that I am new to doing the repairs myself and confuse part names. The fact that this screw is called so many different things depending on the source only exacerbated the frustration I had when trying to search for the right part.

This morning, I found Robert Barr's website (http://www.cycleorings.com/VMkit.html). Scrolling down the page, the most interesting thing I noted was his description of 'Part B': Part 'B' is the worst nightmare, for most folks, since the dealerships don't even have part numbers for these. They fit the mysterious 'emissions mixture screw' which doesn't even show up on factory exploded diagrams.

This was EXACTLY what I was looking for....both in terms of information and the o-ring availability. I thought I was nuts not being able to find the part on any of the diagrams. Well, I guess I'm still nuts, but not for this...

Thanks again for the comments.
 
You must log in or register to reply here.
Back
Top