2006-2014 Honda FourTrax ATV TRX250 EX TRX250X Service Manual, Page 98Get this manual
FUEL SYSTEM Route the carburetor drain hose properly (page 1-18)
Install the carburetor body onto the carburetor insulator and tighten the nuts securely
Connect the choke cable end to the choke leverLoosely install the choke cable into the cable clampConnect the air vent hose and fuel hose to the carburetor body
THROTTLE VALVE
Install the jet needle into the throttle valveInstall the spring and retainer by aligning the boss with the hole in the throttle valve, and set the retainer into the throttle valve grooveJET NEEDLE