Re: How to adjust air/fuel nt carb? Huasheng 142f
No hidden screws on the NT carburetor. I think you're talking about some versions of the infamous CNS carb. They are said to have a hidden or soldered mixture adjustment to help comply with emission standards. The NT carburetor has no such adjustment, hidden or otherwise. They do have an idle speed adjustment screw but it only controls throttle position to set the speed of the idle. Fuel flow below 3/4 throttle is determined by the 'C' clip position on the needle and main jet orifice size.
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