Mikuni Bs26 Carburetor Manual Verified ((full)) -

This is the most common failure point. The orifice is tiny; use a dedicated carb cleaning wire or compressed air. Never drill it out.

The BS26 uses an air screw on the inlet side of the carburetor body. Turning it leans the idle mixture; turning it in richens it. mikuni bs26 carburetor manual verified

Symptoms of wrong height: