Jet, Main #45 SHA/SHB for Scooters & Mopeds
ITEM# TT-26383
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Description
Main Jet #45 SHA/SHB for Vespa Small Frame Scooters and Mopeds
This main jet suits Vespa small frame models that run 16mm and 19mm carburetors. It is meant for riders who are servicing the carburetor on their scooter. Fuel delivery depends heavily on this part, so it is one of the essential scooter carburetors & jets to look at when setting up your ride.
What the Main Jet Does
The main jet controls how much fuel reaches the engine while it runs. On small frame Vespas, it works alongside an idle jet to keep the engine running efficiently. Main jets are available from 37 to 88, so you can dial in the setting that matches your scooter.
Fitting and Tuning
Swapping the main jet means taking the carburetor off, which is simple enough for anyone comfortable with scooter maintenance. Getting the jetting right often takes a few tries. If you need help making adjustments, check the jetting instructions.
Specifications
- Size: #45
- Position: Main jet
- Fits: Vespa small frame scooters with 16mm and 19mm carburetors, and PHBG carburetors
Compatibility
Compatible with:
- Vespa small frame (16mm carburetor)
- Vespa small frame (19mm carburetor)
- PHBG carburetor
Choosing a size: Compare the number stamped on your existing main jet with the size your engine setup requires. Main jets range from 37 to 88.
Browse further: Scooter Carburetors & Jets · Scooter Parts
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