1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 57Get this manual
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FUEL SYSTEM Loosen the starting enrichment (SE) valve nut and remove the SE valve from the carburetor, then disconnect the air vent tube
Do not kink or twist the throttle cableIt will not