⚠️ Many BS26 versions exist (different jetting, choke type, heater, coasting enricher). Always verify part numbers.

The Mikuni BS26 is a constant velocity (CV) carburetor widely utilized in small to mid-displacement motorcycle engines, typically ranging from 150cc to 250cc. Manufactured by Mikuni Corporation, the BS26 is renowned for its fuel efficiency, smooth throttle response, and reliability. Unlike older "slide needle" carburetors, the BS26 utilizes a diaphragm-controlled vacuum slide, allowing the engine to demand the precise amount of air-fuel mixture required for current riding conditions. This report details the construction, operating principles, and maintenance requirements of this specific carburetor model.

Spray outside with carb cleaner before opening – avoid getting dirt inside.

The Mikuni BS26 carburetor is a popular and highly-regarded carburetor model produced by Mikuni, a Japanese company renowned for its high-quality carburetors. In this blog post, we'll take a closer look at the Mikuni BS26 carburetor, its features, specifications, and applications.

October 26, 2023 Subject: Technical Overview, Operation, and Maintenance of the Mikuni BS26 Carburetor

Like any carburetor, the Mikuni BS26 requires regular maintenance and troubleshooting to ensure optimal performance. Here are some common issues and solutions:

The Mikuni BS26 carburetor represents a balance of performance, economy, and user-friendliness. While it lacks the razor-sharp throttle response of a racing flat-slide carburetor, its design is ideal for street motorcycles where reliability and fuel economy are paramount. Proper understanding of the CV mechanism is essential for diagnostics; most issues stem from idle circuit blockages or diaphragm wear rather than mechanical failure of the body itself. With regular cleaning and correct float adjustment, the BS26 provides thousands of miles of trouble-free operation.