2006-2014 Honda FourTrax ATV TRX250 EX TRX250X Service Manual, Page 57Get this manual
MAINTENANCE
FUEL LINE
Remove the seat (page 3-4)Unhook the rubber cover from the retaining clips and turn over it
Check the fuel hoseReplace it if it shows signs of deterioration, damage or leaking
THROTTLE OPERATION
Check for any deterioration or damage to the throttle cableCheck the throttle lever for smooth operationCheck that the throttle opens and automatically closes in all steering positionsIf the throttle lever does not return properly, lubricate the throttle cable and overhaul and lubricate the throttle housingIf the throttle lever still does not return properly, replace the throttle cableWith the engine idling, turn the handlebar all the way to the right and left to ensure that the idle speed does not changeIf idle speed increases, check the throttle lever freeplay and the throttle cable connectionMeasure the throttle lever freeplay at the tip of the throttle lever