This is the small, cone-shaped jet at the bottom of the main jet stack. They come in various sizes ranging 82-165. Most vintage Vespas will use one in the 85-116 range, though performance-modded engines can drink a lot more gas and use much bigger jets. The larger the number, the more fuel will flow through.
Jetting is something that takes trial and error. See our wiki page of jetting instructions for more info.
- Applies to the following models:
- Genuine
- Stella 2T 150
- Vespa - Vintage
- VBA 150
- VBB 150
- VBC 150 Super
- VLA GL 150
- VLB 150 Sprint
- VLX P/PX X150
- VNB 125
- VNC 125 Super
- VNL 125 GT/GTR/TS
- VNX P/PX 125 / T5
- VSB GS160
- VSC SS180
- VSD Rally 180
- VSE Rally 200
- VSX P/PX 200