1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 57Get this manual
FUEL SYSTEM Loosen the starting enrichment (SE) valve nut and remove the SE valve from the carburetor, then disconnect the air vent tube
Remove the carburetor cover screw and the cover
Disconnect the throttle cable end from the throttle drum Remove the throttle cable from the carburetor body by removing the adjuster