This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device.
Clubs, glossaries, museums, shops and much more......
...all of your model making needs from one site.
Adjustment on a carburetor used to set proper fuel/air mixture. Some carburetors have separate needle adjustments for low and high throttle. Typically, turning the needle clockwise (screwing in) leans the mixture (less fuel), and vice versa. However, there are a few exceptions (refer to the engine manufacturer's instructions).