Main Jet #145, SI Carbs for Scooters & Mopeds
ITEM# TT-26282
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Description
Main Jet #145 for Scooters and Mopeds
This main jet is built for scooter carburetors and jets and works with a range of scooter and moped models. It controls how much fuel reaches the engine, which has a direct effect on power and efficiency. The #145 size delivers a higher fuel flow, so it suits modified engines that need extra fuel to run properly. It is one of the core components within scooter carburetors & jets. Finding the right jetting can take some trial and error, so checking reliable guides is a good idea.
Understanding the Main Jet
The main jet is a small, cone-shaped part that sits in the lower portion of the main jet stack. Sizes run from 82 to 165, which lets you fine-tune the setup to match engine changes. Tuned, performance-oriented engines commonly use larger jets, whereas stock setups usually fall in the 85 to 116 range. The jet helps balance the air and fuel mixture, an important factor in how efficiently the engine runs.
Signs It Is Time for a New Main Jet
Think about swapping the main jet if your scooter begins to feel different, for example sluggish acceleration or rough, uneven idling. If you have changed the engine to boost output, a larger jet may be needed to supply the extra fuel it now demands. Refer to jetting instructions first to confirm the correct fit and adjustment.
Specifications
- Size: 145
- Position: Main jet
- Fits: Scooters and mopeds with SI carburetors, main jet size #145
Compatibility
Fits:
- SI carburetor scooters and mopeds (main jet #145)
How to choose: Compare the size number stamped on your current main jet with #145. Available sizes span 82 to 165, and a higher number means more fuel flow.
Browse further: Scooter Carburetors & Jets · Scooter Parts
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