Suzuki GSF650S Service Manual page 152

• Remove the top cap.
#
Do not use compressed air on the carburetor body,
before removing the diaphragm; this may damage the
diaphragm.
• Remove the spring and piston valve assembly 5.
• Remove the jet needle stopper 6, washer 7, E-ring 8 and
jet needle 9 from the piston valve.
• Remove the float chamber 0.
• Remove the carburetor heater A.
• Remove the O-ring B.
FUEL SYSTEM 4-17