Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Hyosung GT125R carbs peoblem Reply To: Hyosung GT125R carbs peoblem
syazel, i tried to send you a personal message, not sure if this site allows it. I’m not going to put the link to the carb parts here, i don’t think Marcel will like it. What i am going to do is post pictures of 2x carb kits available now. I think you will need DIAPHRAMS & possibly the FLOATS, although it’s best to keep the ORIGINAL FLOATS if they haven’t been messed with as they will be set at the right height. Sugest you buy the flaots anyway just in case. Some kits come with needles but you should be able to clean up your old needles. Try to get a Carb Kit that looks like these:
You can easily put all these new parts into your carbies, except the long, thin, pointed part with the fat screw thread on the top of it. This is the mixture screw but it is SET BY FACTORY and you shouldn’t need to touch it. To get to it, you have to DRILL it out. I never needed to touch it. All my satisfaction came from the other parts. I especially like the big golden cylinder. It has a ACORN HEADED SCREW on top and it just slides out. Your needle slides in and out of this and it’s a good idea to swap it for new one. The FLOAT SEAT has an O-ring around it and a filter screen. I am sure you need a new one of those on each carb. The FLOAT NEEDLE drops into it. This little needle has a button on top of it with a spring inside. I am pretty sure your springs will not be springey anymore. The first kit is the one i suggest you buy. I have a link to a picture tutorial on how to service these Hyosung Dual Carbs & will post it here when i find it. There are MANY carb kits where you shop but make sure you get one that looks like my photos – they are a bit more complete than most kits. You can do this job if you can undo screws & you are not heavy handed. Be carefiul undoing the ACRON SREW it likes to break – it’s thread is small & it’s BRASS so it’s brittle. HEAT the CARBYS really well before you start the job. Heat the silver meatal around the screws & heat the screws too. Mostly make the carby HOSUING hot so the heat expands the casing and allows the screws to undo easily without breakage. Marcel has some good guides here & i will upload a full photo walkthrough for you. If you can’t fix the carby with this kit you WON’T have lost much cash. If you ultrasound the carbs you will lose cash as you’ll still need to replace all those bits. They have to take carb apart to clean it & they may wreck it in the process. What do they care? I’d also look for a used Carby from a wrecked Hyosung too, if i couldn’t repair mine. Once you’ve done the job, you’ll realise it’s easy & is better done by somone who gives a sht about the carby. You got this, mate.

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