Gs650 air mixture “hole” and screw replacement

[Guest]

Excuse me if I have the wrong terms here. But my air mixture screws were seized and ultimately stripped. I was able to remove all but one. The last one I ended up drilling all the way through exiting in the carb opening by the throttle valve. I am assuming this carb is ruined? Or does the size of the hole not matter as long as I can get a screw in there? Also I’ve seen some longer screws with a knob adjuster as a replacement. I haven’t looked into if they are the right size replacement for mine, but it seems like a better option than the sink in flat head.

thanks for the help

[Steve]

That carb is toast, you will need a replacement.

I have seen the longer screws with knurled ends for the fuel screws on a VM carb, but never on a BS-series (CV-type) carb.
Where did you see them?

There is no real advantage to having the screws longer. You basically adjust them once, then leave them alone.

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[angelasdad]

Thank you! Yes I figured it was junk now.

I didn’t necessarily see them for my type of carb. Just skimmed eBay for replacements, and saw that type.

[Steve]

Which carb do you need?

Some of us have extra parts, including carb bodies, and each carb is different, so noting location is not just important, it's critical.

Note that when you are numbering the carbs, they are numbered from left to right, as you are sitting on the bike.
#1 is under your clutch hand, #4 is under your throttle hand.

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