Mikuni Bs26 Carburetor Manual Verified Patched -
Essential for preventing overflow or fuel starvation. Measurement is typically taken from the gasket surface to the highest point of the float.
For further assistance or more detailed information, consult the following resources:
| | Circuit | Primary Components | How the Mixture Adjusts | | :--- | :--- | :--- | :--- | | Idle to 1/4 throttle | Pilot Circuit | Pilot Jet, Pilot Air Screw | Fuel screw: Turning out (counter-clockwise) = richer. Air screw: Turning out (counter-clockwise) = leaner. | | 1/4 to 3/4 throttle | Needle/Throttle Valve Circuit | Jet Needle, Needle Jet, Vacuum Piston | Lowering the clip (raising the needle) = richer. Raising the clip (lowering the needle) = leaner. | | 3/4 to Full throttle | Main Circuit | Main Jet, Main Air Jet | Larger main jet number = richer air-fuel mixture. Smaller number = leaner. | mikuni bs26 carburetor manual verified
If the height deviates from 17.0mm, carefully bend the small metal tang on the float arm to adjust. Bending closer to the needle lowers the fuel level; bending away raises it.
Carb Body Flange Surface (Gasket Off) ------------------------------------- | | <-- Measure 17.0mm | [=== Float Body ===] Reassembly Safety Points Essential for preventing overflow or fuel starvation
The Mikuni BS26 is a robust, well-mannered carburetor when set correctly. trace back to three things: dirty pilot jets, incorrect float height, or a torn diaphragm. Using this verified manual will resolve those issues without guesswork.
On the Mikuni BS26, the pilot screw is usually located on the bottom (engine side). Leans the mixture (less fuel). Air screw: Turning out (counter-clockwise) = leaner
Clean valve seat, replace worn needle, reset float to 17.1mm. Clogged pilot jet or misadjusted pilot screw.