Reply To: air screw for idle – GT125 Mixture
I would not touch them whatsoever if it is an original bike that’s never had any mods or last keepers fiddling with it. Korea nailed it perfectly so much they don’t even reveal on the service manual how to adjust them, they actively discourage it.
90% of the time carbs just need a good old bath session with an ultrasonic man and a sessision with the air compressor man (as per service manual)
Rattle cans don’t always do it properly. So an ultrasonic bath + air compressor (these 2 together is a must) then carb will really thank you for it.
This should be done on a carb wizard, as balancing will follow next and either the exhaust pipes of each engine is analyzed or sticking some meter to read A/F ratio at the end to ensure mixture is correct.
Too little = new piston rings soon (with this summer heat = very very soon)
Too much = a very moody woman to start, and poor riding in general.
If you’re looking to improve the top end fuel, check this below.
[Tutorial] How to swap Carb Main Jets – Hyosung GV & GT 125/250
If you are looking to improve the mid-range (4 to 7k rpm), check this below
[Tutorial] How to adjust Carb Slide Needle (Tuning) – Hyosung GV & GT 125/250
Here is an old topic what may have some little wisdom to check certain things on the bike, while you are near the carb area and becareful with rubber intake manifolds , you will see why in the link below.
// Meditation doesn't mean you have to sit still....
