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the brand is on the carburateur GURTNER

@@TheEasyeyes Well my gurtner looks different than this one and mine is the d12 maybe i am missing something?

Hi guys, I'm back in town. The carb is stock 2004 Gurtner France.

@@lightmb8584 That's why is different than mine. Mine is from 1977 like my moped. Cheers

Late answer, but yes, you need to take it of if you want to be able to clean the fuel intake valve properly. And if all parts are undamaged there shall not be any problem to put back together. One useful tip if you got a phone with camera is to take a few shots before you take something apart the first time. Then you have pics to look at if you cant remember how things was assembled.

@@newgame2day screw it in as far you can, and then open it one and a half turn. This is the default setting.

@@newgame2day That one you simply have to change if needed. If it runs to rich (engine spits and blubbers and can´t rev properly) you need a smaller one. If the engine are weak, hard to start but rev good downhill, its to small. I have a Speedfight 2 and the default jet in that one was size 60. After a renovation and fitted with a new sports cylinder on, it wanted bigger. I changed to a 62 one, but that was not good enough, so i try a 68. Now it runs fine and pull away good. Open your carb and check what size you have on your jet, and buy a set of jets so you can try out which one you need.

@@newgame2day Sounds like it´s flooding. Have you check the valve by the floater? Take it of the bike and clear out remaining fuel. Put a clean hose on the fuel intake, turn the carb upside down. If you with our mouth can blow air in to it it does not close properly.

@Noah Vdc You mean the jet? That depends on the setup you have. Can´t say for sure, but think original is about 60. But I have a sports cylinder on mine and unrestricted CDI and removed variator washer, so mine want a 68.