Description
Scooter Carburetor Air Idle Screw for 50cc QMB139 Engines
This air idle adjustment screw is designed specifically for 50cc 4-stroke QMB139 engines. It plays a key role in regulating the fuel and air mixture for engine performance. If you are experiencing issues such as hard starting, surging, or poor idling, replacing this component can help restore functionality. It is one of the simpler scooter carburetors & jets to swap at home.
What This Part Does
The air idle screw is important for fine-tuning the air-fuel mixture in your carburetor. If your engine shows signs of bogging or has difficulty idling, a worn or dirty carburetor is often the culprit, making this part necessary for maintenance.
Specifications
- Overall Length: 30mm
- Thread Size: M6x0.50
Fitment
This part is compatible with the following vehicles:
- Baja SC50
- Boreem (BMS)
- Kymco
- Panterra
- Roketa
- SUNL
- Tank
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
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