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- Instock
30.11 USD (4,800 JPY)
Delivery Information
In Stock : 2 left, Ships within 24 hours.
Estimated arrival date around
Product detail
Quantity: For 1 carburetor (1 cylinder)
【Set Contents】
Needle valve
Idle screw (Air screw)
Float chamber gasket
Pilot jet: 3 sizes
Main jet: 6 sizes
Jet needle: 4 sizes
etc.
** Set contents vary by product. Please refer to the product image.
* Specifications are subject to change by the manufacturer without notice..
Here's a list of motorcycle good mood diagnostics to help you troubleshoot (manufacturer's website).
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Keyster carburetor fuel tuning kits contain almost all parts necessary for repairing and adjusting carburetors. This includes needle valves, idle screws (air screws), float chamber gaskets, and more. A key feature is the extensive range of fuel tuning components: 3 sizes of pilot jets, 6 sizes of main jets, and 4 sizes of jet needles.
The rubber-tipped needle valves utilize the award-winning "AA Needle," which offers performance far exceeding that of OEM parts.
Conventional aftermarket jet sets typically feature evenly spaced sizes (e.g., increments of 5 or 10). However, the jets in this kit are not evenly spaced. They are designed to be used in combination with the jet needles to allow for effective and precise adjustments to the air-fuel ratio.
The first purpose of the fuel tuning kit is troubleshooting (improving malfunctions). It is used to repair motorcycles with fuel supply issues.
Generally, to increase the air-fuel ratio, all three components—pilot jet, jet needle, and main jet—should be adjusted in the L direction; conversely, to decrease the air-fuel ratio, they should be adjusted in the R direction. However, the combination of L, S, and R settings varies depending on whether you want to adjust the low, mid, or high-speed ranges. This is the essence of carburetor tuning.
The second purpose of the fuel tuning kit is motorcycle tune-up (performance enhancement).
Note that a carburetor does not generate power on its own, so adjusting the carburetor alone will not yield significant performance gains. Understand that performance improves by adjusting the carburetor to match modifications made to the engine and its peripheral components. For example, if you replace the air filter to increase airflow or the muffler to reduce exhaust resistance to improve engine performance, the fuel mixture requirements of the engine will naturally change. This is where carburetor adjustment comes in, and the fuel tuning kit makes this process easy.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.