2007-2009 Honda TRX300EX TRX300X service manual, Page 87Get this manual
FUEL SYSTEM THROTILE STOP SCREW
Remove the followingscrew and stay throttle stop screw spring washer
STAY THROTTLE STOP SCREW
CHOKE LEVER
Remove the followingscrew setting plate choke lever
THROTTLE VALVE
Remove the followingthree screws and clamps top cover a-ring