Mikuni Bs25 Carburetor Diagram Patched | No Password

A standard Mikuni BS25 exploded diagram includes:

Key original flaw: The BS25’s pilot circuit is notoriously lean due to emissions regulations, causing cold-start hesitation. mikuni bs25 carburetor diagram patched

Below is a clear, stepwise textual “diagram” referencing parts and relationships for the BS25 (useful if a visual diagram is unavailable). Numbering corresponds to standard Mikuni/layout conventions. A standard Mikuni BS25 exploded diagram includes:

Keep these relationships in mind: fuel enters through inlet → floats regulate level → pilot jet + needle/jet metering supply fuel through venturi → slide and needle control throttle response → mixture adjustments via pilot screw and needle clip. Key original flaw: The BS25’s pilot circuit is

Original factory diagrams often omit:

The patched version above merges exploded views from Suzuki GN250, Yamaha XV250, and Keihin-Mikuni cross-reference sheets to give you a complete, usable map for cleaning and tuning.