2006-2014 Honda FourTrax ATV TRX250 EX TRX250X Service Manual, Page 91Get this manual
FUEL SYSTEM Remove the throttle cable from the throttle valveRemove the throttle valve spring and spring seat
Remove the jet needle retainer by releasing the tabs from the groove in the throttle valve
RETAINER
Remove the spring and jet needleCheck the throttle valve and jet needle for scratches, wear or damage
JET NEEDLE
RETAINER