Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Gt 125r Throttle problem Reply To: Gt 125r Throttle problem
Thanks will strip it down and give it a good clean
Keep us posted, ultrasonic cleaning (not rattle cans) , really pays off and please only use e5 fuel where possible because e10 just isn’t great. And fancy 2022 cars don’t drive that much better on e10 either, where e5 gives them better mileage & e5 on bikes doesnt go off as quick as e10 does if bike has been stood before you bought. But as simon says , long standing isnt good for carbed bikes anyway.
if you have fuel lines older than 4yrs (oem) , as per service manual please replace them and get fresh fuel filter, the bike will thank you for that.
Carb Jetting is below (to help the main jets pick up better when riding, and slightly rich jets is better for a hot engine so it doesnt lean out full throttle, especially with 125 bikes commonly having aftermarket cans fitted (more air out or in = more fuel in) (electrics beefed up only help burn the fuel better , eg throttle response is a bit more snappier that’s all but pays off)
See the 2 links here.
[Tutorial] How to swap Carb Main Jets – Hyosung GV & GT 125/250
[Tutorial] How to adjust Carb Slide Needle (Tuning) – Hyosung GV & GT 125/250
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