- How To Tune NT Carburetor for 48cc 50cc 66cc 80cc Bike Engine Kit

— In this video, ’s Technician, Jonny explains how to adjust and tune your 66cc, 80cc, or 48cc bicycle engine NT carburetor the easy way. This is great for any 2-stroke bike engine kit like, Grubee SkyHawks, StarFires, Flying Horses, RAW, and much more! Fine tuning your carburetor, when following the troubleshooting just right, will improve your motor performance. Jonny gives clear advice in properly adjusting your carb on your motorized bicycle for both novice and exp