2006-2012 Honda TRX90 TRX90EX/X Service Manual, Page 71Get this manual
FUEL SYSTEM Check the throttle valve, jet need le and retai ner for scratches, wear or damageTHROTTLE VALVE
RETAINER
JET NEEDLE
CARBURETOR BODY
Loosen the drain screw and drain the fuel from float chamber into the approved gasoli ne conta inerTighten the drain screw