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Reply To: Aquila GV125 2002 – Air & Fuel Parts Fitting Questions

Dec 13, 2024 at 3:40 PM #17969

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Topics: 39
Replies: 2,917

🌍 Country: UK
⚡ Bike Model: GT

Coming from ebay , we have discussed there what we can do about the Air System and I advised which parts to get, so i will keep an eye on your ebay before i post anything

Welcome to the dark side! And good to have you over here, now i can speak unfiltered because ebay really does hate it when i try to divert people out of the site (they want to collect sales & tax the sellers there lol)

Anyway, it looks like from the tank it does appear it has a fresh looking TAP that says “ON/OFF” this is good, as we don’t want fuel to keep flooding the cylinders after the bike is OFF.

Let’s see what happens with her using that electric pump

I advise to replace ALL the pipes (Hyosung service manual says if the lines are 4yrs old from the factory, they MUST be replaced as it starts to break down internally and cleaning them delicate japanese carbs is not fun at times!) – Your grey lines are OEM , so well over 22 yrs old. Plus it might burst when the pump starts priming the fuel.

And while at it, replace the fuel filter too. See here:

Uprated & Braided Fuel Line + Filter Kit :: Hyosung GV125 & GV250 {Carby Models}

Keep in mind and make sure the fuel pump is connected to the correct plug.

There is a WHITE plug that has 1x Black line and 1x YELLOW line with a black tracer on it , usually near the upper part of your seat, this is for the fuel tank SENSOR

The pump (in my memory , if i can….) should be dark , like 1x black, 1x brown/red … but either way have a look.

2PIN PLUG that is “Blue x1 and Green x1” would be for the Neutral Sensor that’s going near the sprocket cover.

Another BIG 2Pin plug that is “Blue x1 and Green x1” is for the Stator —> It is in tandem with another giant plug that is “3x Yellow Wire” is for stator unit too.

That silver regulator on the bike was recalled by Hyosung (gets too faulty and blows a lot) , and it was superceeded by a Larger Black Regulator (but is still trash!) , usually regulators are Hyosung’s #1 problem to this day as they don’t make them but outsources it to woochang , Sun Electric, Hankuk in Korea.

See this one: