Description
Main Jet #57 for Vespa Small Frame Scooters and Mopeds
This Main Jet #57 is designed for Vespa small frame scooters equipped with 16mm and 19mm carburetors. It is also compatible with PHBG carburetors. This jet is a key component for proper fuel delivery and performance. Like many parts associated with scooter carburetors & jets, it requires careful selection and tuning for effective operation.
Understanding Main Jets
Main jets play a significant role in regulating the fuel-air mixture in your scooter's engine. Small frame Vespas typically utilize two jets: the main jet and an idle jet. The main jet allows fuel to flow through the needle, affecting overall engine performance. Sizes for main jets typically range from 37 to 88, with this specific jet being sized at 57.
Installation Considerations
Replacing the main jet involves a bit of trial and error to achieve the desired performance. Proper jetting can significantly affect throttle response and engine efficiency. For detailed guidance on how to adjust your jetting setup, refer to available jetting instructions and resources.
Specifications
- Size: 57
- Position: Main Jet
- Fits: Vespa small frame scooters with 16mm and 19mm carburetors, PHBG carburetors
Fitment
This main jet fits various Vespa small frame models. It is specifically designed for scooters that utilize the mentioned carburetor sizes.
- Vespa Small Frame Models
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
Shop more: Scooter Carburetors & Jets · Scooter Parts
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