Mikuni Bs26 Carburetor Manual Verified
Whether you’re nursing a classic Suzuki Intruder 125 back to life, chasing a stubborn flat spot on a Kawasaki Ninja 150R, or perfecting the idle on an Aprilia Leonardo 125, the is likely at the heart of your fuel system. This isn’t just a part; it’s a finely tuned instrument. Its vacuum-operated slide system offers smooth throttle response, but it also means that when things go wrong, the fix isn't always obvious. This guide cuts through the guesswork and provides the verified technical knowledge and manual-based procedures you need to service the Mikuni BS26 correctly.
Hold the carburetor body at a 60-degree angle so the float tang rests lightly against the needle valve pin without compressing the internal spring. mikuni bs26 carburetor manual verified
| Specification | Verified Value | Notes | | :--- | :--- | :--- | | | #127.5 (Left) / #130 (Right) | GS500 only. Singles use #125. | | Pilot Jet | #40 | (Some models use #37.5 – check your needle) | | Pilot Air Screw | 2.5 to 3.0 turns out | From fully seated. Do not exceed 4 turns. | | Float Height | 13.0 mm (13.7 mm for GN250) | Measure with carb inverted, float tang just touching needle spring. | | Needle Clip Position | 4th groove from top | (Standard is middle, but GS500 uses richer 4th) | | Idle Speed | 1,200 RPM (+/- 100) | Must be set when engine is fully hot. | | Diaphragm Part # | 13258-02C00 | (OEM Mikuni – Aftermarket fails quickly) | | Float Bowl Gasket | 13269-01A00 | Not reusable after soaking in cleaner. | Whether you’re nursing a classic Suzuki Intruder 125
Push the float hinge pin out using a small punch to remove the float assembly and the fuel inlet needle. This guide cuts through the guesswork and provides
Constant velocity carburetors use pressure differentials to regulate airflow. Unlike direct-pull carburetors, your throttle cable does not lift the slide.
Chemical cleaning requires separating metal components from rubber components. Chemical Bath Rules