Main nozzle for the SI carburetor, suitable for your Vespa Largeframe scooter. A list of the exact models can be found below in the drop-down menu under «suitable for the following models».
The main throttle determines how much fuel is provided for mixture formation, which is particularly noticeable in the mid and upper rev range. The throttle body is located in the throttle body under the mixing pipe and the main air correction throttle body and should always be properly adjusted together with the other components when making changes to the setup. As a general rule, the larger the number printed on it, the larger the bore and the richer the mixture.
| Vespa | Vespa PX, T5, Cosa - PX80 E Lusso · V8X1T · 1983–1993 Lusso / Arcobaleno , PX100E · VIX1T · India , P125X · VNX1T · 1977–1982 (Old PX) External Lock , P125X · VNX2T · 1981–1984 (Old PX) Internal Lock , PX125 E · VNX2T · 1982–1993 / Lusso / Arcobaleno , PX125 · VNX2T · 1993–1996 Classic , PX125 · VNX2T · 1997–1999 (Disc) , T5 125 · VNX5T · 1985–1993 , PX125 · ZAPM471 · 2001 Model Year Catalytic Converter , P150X · VLX1T · 1978–1993 , P150S · VBX1T · 1978–1990 , PX150 · ZAPM742 · 2001 Model Year Catalytic Converter , P200E · VSX1T · 1977–1984 (Ignition Switch on Steering Head) , PX200 · VSX1T · 1984–1993 Lusso / Arcobaleno , PX200 · VSX1T · 1993–1996 Classic , Cosa 125 · VNR1T · I 1988–1992 II 1992–1998 , PX200 · VSX1T · 1997–1999 (Disc) , Cosa 150 · VLR1T · I 1988–1991 II 1992–1995 , Cosa 200 · VSR1T · I 1988–1992 II 1992–1998 , P80X · V8X1T · old (ignition switch on steering head) |
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