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Thread: Need Gs650G carbs or help

  1. #1
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    Default Need Gs650G carbs or help

    This is my first post on the forum. I have an 83 GS650G that I am trying to restore. I am stuck on carb rebuild. I wanted to reheat and could not get the air jet screws out for anything. I took them to a really good shop that specializes in older bikes and they tried everything to remove them with no luck. I now have a set of ganged bodies and the previous ones mentioned and could put the new cleaned parts on the replacement bodies but those air mixture screws will not budge either. Any suggestions? Do I give up on a stage 1 mod? Are there other carb units from other years and models that will work on this bike?
    Last edited by Lifeguard; 06-10-2021 at 06:21 PM.

  2. #2
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    carb tutorials on right margin

    http://members.dslextreme.com/users/bikecliff/
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

  3. #3
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    Heat and PB Blaster (or similar) works most of the time. It's critical to use a screwdriver that tightly fits the slot. Custom grind a screwdriver if you have to. It may take several heat/spray/heat/spray cycles and with each cycle it's best to allow the penetrating lube to do it's thing for several hours.

    At this point the slot in the screws are no doubt gone. You have two options: drill out the screws using LH drill bits, or cut a new slot using a thin dremel tool disc. To cut the slot you have to cut into the carb body but that's purely cosmetic.

    Most of all don't give up. Now that you have found us here please do a search for info before tacking on tasks like this before too much damage is done.

    Good luck

  4. #4
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    Would it be smart to try brake cleaner to free it up if there's some type of adhesive? Dont think that's the case but It should dissolve anything inbetween the threading of the screw and body
    Ian

    1982 GS650GLZ

    Want a "twin" for my bike

  5. #5
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    Quote Originally Posted by timebombprod View Post
    Would it be smart to try brake cleaner to free it up if there's some type of adhesive? Dont think that's the case but It should dissolve anything inbetween the threading of the screw and body
    Brake cleaner won't remove corrosion. That's why the screws seize.

  6. #6
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    Post #4 and #7 have solutions and a how to with pics to repair a damaged Pilot/Mixture screw, (same BS type carbs as the suzuki).

    http://www.xs650.com/threads/strippe...acement.10044/
    82 GS650E (Canadian), 83 XS650SK (Canadian), Main machines Running
    Aussie, 74 TX650A, 80 XS650SG, 81XS650SH, 80XS850, in various states of repair/disrepair
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