Product Description
"19mm Carburetor With Filter: 58mm/ Color: Red and Blue Fits 2 stroke 49cc 66cc 70cc 80cc engine With No Adjusting Throttle The screw on the side of the carburetor is for the idle. Jet: Normally for 6mm jet,you can start with Start with the smallest size jet, the jet does not need to be torqued down with a great deal of force. Note:You have to wrap several layers of thread tape around it if you are replacing the NT carb that came with your 66/80cc bicycle engine, and if you are at a higher elevation you may need to change jet size for this carburetor to run properly. "