Hold the carburetor body sideways so that the float hangs down, resting lightly against the needle valve without compressing the internal tiny spring-loaded pin.
Carefully pull the float pin out to remove the float assembly and the needle valve.
If you own a late-80s to early-2000s Suzuki GS500, GN250, or GZ250, you have almost certainly cursed the name of the —or perhaps you’ve praised its reliability. The truth is, this constant velocity (CV) carburetor is a masterpiece of emissions-era engineering when it works correctly. But when it fails? It becomes a ticking time bomb of hesitation, flat spots, and sticky slides.
If you want to troubleshoot a specific issue with your Mikuni BS26, I can provide the exact steps. Please let me know: The of your vehicle mikuni bs26 carburetor manual verified
The Mikuni BS26 carburetor is a reliable and high-performance carburetor model that requires proper installation, adjustment, and maintenance to ensure optimal engine performance. This manual provides a comprehensive guide to the components, specifications, and troubleshooting procedures of the Mikuni BS26 carburetor. By following this manual, enthusiasts and professionals can ensure accurate and efficient tuning and maintenance of their Mikuni BS26 carburetor.
Houses the rubber diaphragm, slide, return spring, and needle.
Remove the two or three screws securing the top vacuum cap. Remove the cap slowly to prevent the internal spring from launching out. Hold the carburetor body sideways so that the
Remove the cap slowly to prevent the internal spring from launching out. Lift the spring out.
The idle mixture screw calibrates fuel delivery at starting speeds and idle.
Unthread the brass hex stem that the main jet was screwed into. Push it through into the venturi bore from the bottom. The truth is, this constant velocity (CV) carburetor
If the engine cuts out or loses power at wide-open throttle, change the main jet size. A white plug tip indicates a lean condition requiring a larger main jet number. A dark soot-covered plug tip indicates a rich condition requiring a smaller main jet number. Comprehensive Troubleshooting Matrix Primary Root Cause Verified Corrective Action Engine will not start; dry spark plug Clogged pilot jet or blocked fuel inlet needle valve.
Gently grasp the plastic slide and pull upwards. The rubber diaphragm will lift out of its machined groove. Inspect the rubber immediately by holding it up to a light source to check for pinholes or tears.