Hi, My SR 50 has not been taking much gas with Joke since recently (only in cold condition). If you have driven about 2-3 km, it normally takes gas. What can this be? BJ 2004 water cooling. Have tried to adjust the screw for the empty lukewarm speed but it does nothing. Always the same. What can this still be? Petrol is inside. Oil lamp is not lit so I go out of the still oil inside. Spark plug is new because the old one was still gone, but had to drop out from time to time. With Joke the scooter runs, but only up to max 20 km/h then the joke has to go in or nothing more. Does anyone still have an idea what might be to set or check?