Replace a worn or damaged needle jet on your QMB139 50cc 4-stroke scooter with this Universal Parts Adjustable Needle Jet. This stainless steel needle jet features a tapered tip, cylindrical body, and 5 adjustment grooves for fine-tuning the air/fuel mixture across the throttle range. Includes a C-clip pre-installed in the middle (3rd) groove position. Raising the clip leans the mixture; lowering it richens it.
Fits QMB139-based 50cc / 80cc engines with the following engine codes:
Don�t see your engine listed? If the engine code includes �QM� or �FM�, this needle jet is likely compatible with your carburetor.
California Prop 65 Warning: www.p65warnings.ca.gov
