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Valves Main Jet and Needle Circuit
Pilot Jet and Idle Circuit Accelerator Pump
Cylinder Head Porting Valve Spring Diagrams
For many people, the four stroke carburetor s somewhat of a mystery. The fact that everywhere you go, you hear different things doesn't help. After a while you may get frustrated with just throwing money away trying to get it to run a certain way.

Here we have compiled information that should help you to have a solid understanding about what your carburetor is doing, and how various products affect your bikes running. Click on any of the links above to learn more.

F2 Racing
PO Box 22097
Flagstaff, AZ 86002-2097
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