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GS1000 Pilot Fuel Screws

  • Thread starter Thread starter Tinactin
  • Start date Start date
T

Tinactin

Guest
Hi. I'm new.

I recently bought a '79 GS1000 as a bit of a project, and tonight I was pulling apart the carburetors to clean them. According to my service manual, they're Mikuni VM26SS models. They look like this:
img0919ul.jpg

img0921jt.jpg


The pilot screws had been maladjusted at some point, and I had found a guide on where they should be, in terms of number-of-turns-from-seated. In trying to find what "seated" meant, and in my mechanical bloodlust, I managed to transform the thingy on the top into the thingy on the bottom:
img0922ae.jpg


I have searched these forums, several carb-kit-selling websites, and about a hundred Google terms, yet I cannot even find a picture of these screws outside of BassCliff's guide (which does mention not to break the screw, but not how to fix it if you do), let alone a place to buy replacements.

TL;DR: Here is my predicament. I need one (or four, just in case) of these, without the spring (Image credit: BassCliff)

pilotscrew.png


If anybody either has some of these for sale, or knows where I can buy them, I would be very pleased.
 
Nessism said:
http://www.thegsresources.com/_forum/showthread.php?t=82559

http://www.z1enterprises.com/detail.aspx?ID=487

http://www.thegsresources.com/_forum/forumdisplay.php?f=112

Edit: you can not properly clean the carbs with them ganged together. The choice is yours of course though.
Click to expand...

Ha! I'm not sure what search magic you used, or how far back you had to look to find that 2005 thread, but I really appreciate your time. If you're ever in Colorado, I'll buy you a beer.

The tip is not poking through, though I was tempted to just turn the screw in more until it poked through so I could tap it out. I'm sure I'll find a way to get it out without ruining the carb any further.

As far as pulling them off the rack, I was trying an "interim" clean to see if just cleaning the jets and correctly adjusting the screws would make the bike run better. Thanks to my thick head it won't run at all for a bit, so I suppose I might as well do a "proper" clean.

Thanks again.
 
Advanced Search is the key. Type your keyword in the search field and then toggle "titles only" before hitting the Search button. You can find tons of threads on broken fuel screws this way...and frustration with finding those screws. Those kits are the only way to get new screws that I'm aware of.
 
Greetings and Salutations!!

Greetings and Salutations!!

Hi Mr. Tinactin,

Tinactin said:
...I cannot even find a picture of these screws outside of BassCliff's guide (which does mention not to break the screw, but not how to fix it if you do)...
Click to expand...

It seems you missed this PDF guide on my little website:

Remove Stuck Pilot Screws
(by Mr. Hoomgar)

It's essentially Mr. Hoomgar's broken pilot screw removal thread in a PDF file. I was hoping to make this information easier to find. I guess I failed. :o


Anyway, let me dump a TON if information on you and share some GS lovin'. :D

I just stopped by to welcome you to the forum in my own, special way.
big_hi.gif


If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....
hat1.gif


Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", "Top 15 Tips For GS Happiness", the Carb Cleanup Series, and the Stator Papers. All of these tasks must be addressed in order to have a safe, reliable machine. Now let me roll out the welcome mat for you...

carpet.jpg


Please click here for your mega-welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike! :D

Thanks for joining us. Keep us informed.

Thank you for your indulgence,

BassCliff
 
I had a feeling that a new thread would generate a lot of "repost!" responses, but I had dutifully searched for over an hour before posting. Thanks Nessism for the search tips to prevent future failures of such magnitude.

Thanks to BassCliff, as well; sorry I missed your guide. The tip of the screw wasn't protruding from the orifice enough for the awl to work, so I ended up wedging a thumbtack in the tip of a 1/4" hex driver and (gently!) tapping that into the hole to get the thing out. It very slightly enlargened the orifice, so the carburetor is certainly destroyed beyond earthly repair.

But the taper is fine, so it shouldn't be too much of a problem.

Thanks again for your help guys.
 
So I'm in the same boat with one of my carbs - one of the previous owners of these carbs must have man-handled the air screw adjustment... Though the ends of mine are intact my pilot air screw broke off right after where the thread ends - I don't see it poking out into the main chamber...But at least there's a little bit of meat to drill into. I've tried drillin' from the top down but first attempts ate up my drill bit! So I'm going to try drilling again with a new metal specific bit... This totally sucks hope it never happens to you.
 
Tinactin said:
I had a feeling that a new thread would generate a lot of "repost!" responses, but I had dutifully searched for over an hour before posting. Thanks Nessism for the search tips to prevent future failures of such magnitude.

Thanks to BassCliff, as well; sorry I missed your guide. The tip of the screw wasn't protruding from the orifice enough for the awl to work, so I ended up wedging a thumbtack in the tip of a 1/4" hex driver and (gently!) tapping that into the hole to get the thing out. It very slightly enlargened the orifice, so the carburetor is certainly destroyed beyond earthly repair.

But the taper is fine, so it shouldn't be too much of a problem.

Thanks again for your help guys.
Click to expand...

I too had trouble finding meaningful posts. Thanks for the tips Nessism. I did see Basscliff's site had a little something about it towards the right hand side bottom...
 
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