Mikuni Bs26 Carburetor Manual Verified [updated] Jun 2026

Adjusts the idle air-fuel mixture. On the BS26, this is a fuel screw located on the engine side of the carburetor body. Turning it out richens the mixture; turning it in leans it. Disassembly and Cleaning Procedure

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: He checked the side of the carb body , looking for the "Made in Japan" casting to ensure he wasn't working on a knockoff. Adjusts the idle air-fuel mixture