2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 101Get this manual
FUEL SYSTEM Route the carbure tor dram hose properly (page 1-18)
Instal! the carburet or body onto the carburetor insulator and tighten the nuts securely
Connect the choke cable end to the choke leverLoosely install the choke cable int the cable clampConnect the air vent hose and fuel hose to the carburetor body
THROTTLE VALVE
Insta the jet needle into the throttle valveInsta the spr ing and retainer by aligning the boss with the hole in the throttle valve, and set the retainer into the throttle valve grooveJET NEEDLE