Located on the intake manifold side or the top of the body. These are frequently capped (patched) with rubber vacuum caps if a vacuum-operated petcock or PCV system is not in use. Idle Mixture Screw:
Secured by two or four screws; holds the diaphragm assembly in place. Vacuum Diaphragm: mikuni bs25 carburetor diagram patched
Carburetor - Mikuni BS25 Series Round Slide – VMC Chinese Parts VMC Chinese Parts Located on the intake manifold side or the top of the body