Main Jet (#39) for SHA/SHB for Scooters & Mopeds
ITEM# TT-26626
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Description
Main Jet #39 for Vespa Small Frame Scooters and Mopeds
This main jet suits Vespa small frame scooters and mopeds that run 16mm or 19mm carburetors. It controls how fuel flows, so it has a direct effect on how the engine performs. You can find it alongside other carburetor parts and jets, which let you fine-tune the fuel mixture. Getting the best result often takes a bit of trial and adjustment.
About the Main Jet
The main jet regulates how much fuel mixes with incoming air before it reaches the engine. This one is size #39, and sizes are offered from 37 through 88. Picking the right jet and fitting it correctly can noticeably affect throttle response and fuel economy.
Fit and Compatibility
This jet works with Vespa small frames and PHBG carburetors. If the scooter has been modified or tuned, take those changes into account when swapping jets so the setup still runs well.
Specifications
- Size: #39
- Fits: Small Frame Vespa with 16mm and 19mm carbs; also PHBG carbs
Fitment
Compatible with:
- Vespa small frame (16mm and 19mm carbs)
- PHBG carbs
How to choose: Check your carburetor bore first. This jet is made for 16mm and 19mm carbs, and available sizes range from 37 to 88.
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