SKU:222061
The MIKUNI N100.606 Main Jet #142.5 is a replacement carburetor component designed to help maintain accurate fuel delivery during higher-throttle operation. Manufactured for use in compatible Mikuni carburetor applications, this main jet supports proper air-fuel mixture tuning and can help restore consistent engine response when an original jet is worn, damaged, clogged, or incorrectly sized. The #142.5 designation identifies the jet size and should be matched to the carburetor, engine configuration, intake and exhaust setup, and manufacturer’s tuning specifications before installation.
Use the MIKUNI main jet as part of a careful carburetor service or tuning procedure. Installing the correct jet can contribute to smoother acceleration, reliable performance, and more consistent operation across the engine’s usable range. Before fitting, inspect the carburetor passage, float system, needle, fuel supply, and related components to confirm that other conditions are not affecting fuel delivery. Always work with clean tools and prevent dirt or debris from entering the carburetor during removal and installation.
This replacement component is identified by MIKUNI part number 004.487 and is supplied as one main jet. Confirm the required Mikuni jet family, thread style, size, and application using the carburetor manufacturer’s service information or the original component before ordering. Because jet selection can vary with altitude, fuel type, engine modifications, and operating conditions, professional installation or final tuning may be recommended. The MIKUNI N100.606 Main Jet #142.5 provides a practical replacement option for maintaining the intended carburetor setup and supporting dependable engine performance.
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