Main Jet #41; SHA/SHB Carbs
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Small frame Vespa scooters have only two jets: a main jet that the needle passes through, and an idle jet. Main jets come in various sizes, ranging from 37-88. This is the main jet for Vespa small frame scooters with 16mm and 19mm SH carbs. Also fits PHBG carbs.
_x000D_Jetting is something that takes trial and error. See our blog page of for more info.
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