Mikuni Bs26 Carburetor Manual Verified Jun 2026

Unlike a flat-slide racing carburetor, the BS26 is a unit. This means the throttle plate (butterfly valve) is directly connected to your throttle cable, but the slide (piston valve) is controlled by engine vacuum and a diaphragm.

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If you experience a "flat spot" during mid-range acceleration (1/4 to 3/4 throttle), you may need to adjust the jet needle. Unlike a flat-slide racing carburetor, the BS26 is a unit