Keeway flash starts perfectly but when twisting throttle it moves off then starts to die but when i let go of throttle its ok

SOURCE: keeway superlight 125 adjusments

Pull the slide out of the carb then move the clip on the jet needle down one or two notches. This will richen the low range fuel mix. You can also get a rear sprocket with about 4 more teeth. This will get you off the line and out of the corners faster BUT it will also lower your top speed.

Please rate this solution. Thanks supergunner!

SOURCE: 2005 450r dies at full throttle

Sounds like dirt in the main jet of the carb. Take the slide out and clean the needle. The pull the float bowl and blow air or carb cleaner through the brass jet in the middle of the barb, where the needle seats.

SOURCE: engine starts and idles perfectly, but as soon as

Howdy: Could be the floats. Idle good but rev it up and the gas goes lean. Use quick start sprayed in the air cleaner area and see if the bike will rev. If so check out the float adjustment. Could be a stuck needle to the floats shut off. Good luck - Doug

SOURCE: wont start by kick start but will by pull start

it could be the gaskets around your carb are bad and leaking air if so its thinning your gas fumes with more air then what is needed inside your combustion chamber witch is causing your engine to stop running like that. best of luck

SOURCE: Idling engine dies with even slight throttle twist.

Check float height in carbs.Thanks for asking and I hope this helps out.Please leave me 4 thumbs up.