Yep, they look pretty gummed up, but no where near beyond hope. I just cleaned up a set recently that were at least that bad, maybe worse, and they came out great. A word of caution - remove all the rubber bits you can before getting the carb cleaner anywhere near them. That stuff ruins rubber. Remove the slide/diaphragm assemblies especially. The rubber diaphragms will shrivel up like used condoms if you get carb cleaner on them, lol. Also, don't dunk and soak the carb bodies. There are rubber seals on both ends of the butterfly shafts and the cleaner would get in there and ruin them. I spray some carb cleaner in a little tub (cap from liquid laundry detergent bottle) and just wipe the carbs out with it using Q-tips, rags, and pipe cleaners dipped in it. It's the best way. You don't run near the risk of damaging any remaining rubber bits this way, like immersing the carb body would. You could dunk and soak the float bowls if you remove the drain screw first. It has an o-ring on it.
For the most part, your carbs look unmolested and not fooled with much. I do see someone replaced the float bowl screws with Allens, and that's fine. Most of us do that (along with the top screws too). You haven't given a real good pic from the top but from this one already in your album, it looks like the factory brass plugs covering the mix screws haven't been removed .....
Here's a better shot of what one looks like .....
To do a proper cleaning of the idle circuit, you have to remove that plug so you can remove the mix screw under it. I see in your newly added pics that the butterflies look open quite a bit. That means the idle speed was turned way up. I'm guessing that was necessary because the bike wouldn't idle and kept stalling. So, there's a good chance your whole carb issues are nothing more than a plugged up idle circuit. There is also a small o-ring on the mix screw that needs to be good or it won't meter fuel correctly. Chances are that's gone bad as well .....
For the most part, your carbs look unmolested and not fooled with much. I do see someone replaced the float bowl screws with Allens, and that's fine. Most of us do that (along with the top screws too). You haven't given a real good pic from the top but from this one already in your album, it looks like the factory brass plugs covering the mix screws haven't been removed .....
Here's a better shot of what one looks like .....
To do a proper cleaning of the idle circuit, you have to remove that plug so you can remove the mix screw under it. I see in your newly added pics that the butterflies look open quite a bit. That means the idle speed was turned way up. I'm guessing that was necessary because the bike wouldn't idle and kept stalling. So, there's a good chance your whole carb issues are nothing more than a plugged up idle circuit. There is also a small o-ring on the mix screw that needs to be good or it won't meter fuel correctly. Chances are that's gone bad as well .....
