Mikuni Bs26 Carburetor Manual Verified Jun 2026

It automatically compensates for changes in engine load and atmospheric pressure.

1.5 to 2.0 turns out from seated Component Identification and Overview

The following manual is based on verified information from various sources, including the Mikuni factory manual and other reputable publications. mikuni bs26 carburetor manual verified

Use JIS (Japanese Industrial Standard) Phillips screwdrivers to avoid stripping the soft brass or aluminum screws common on these units. Step-by-Step Tuning Order

Carefully pull the float pin out to remove the float assembly and the needle valve. It automatically compensates for changes in engine load

The BS26 is a 4-stroke carburetor. Its 26mm venturi diameter makes it perfect for 125cc to 250cc single-cylinder engines found in motorcycles and scooters from manufacturers like Suzuki, Aprilia, Kawasaki, and Peugeot.

The large brass hex or round jet located in the center of the bowl. Controls full-throttle fueling (3/4 to wide-open throttle). Step-by-Step Tuning Order Carefully pull the float pin

Disconnect the throttle cable, choke cable (or enricher wire), fuel line, and vacuum lines. Loosen the intake boot clamps and pull the carburetor free.

When searching online, always prioritize scans or PDFs of these official service guides. If using free online resources, cross-reference information across multiple reliable sources to ensure it aligns with official specs.

Spray carburetor cleaner through every passage, jet, and emulsion tube hole.