2001-2003 Honda TRX500FA Factory Service Manual, Page 97Get this manual
FUEL SYSTEM Install new O-ring into the float chamber groove properlyInstall the float chamber and tighten the fo screws
securely
PRIMER KNOB
Install the spring primer knob assembly, and ti ghten the two screws securely
PRIMER KNOB ASSEMBLY
VACUUM CHAMBER
Install new O-ring into the air joint grooveInstall the set plate into the air joint grooveInstall the air joint into the carb uretor body, aligning the set plate groove with the lug on the carburetor