2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 59Get this manual
MAINTENANCE Slide the rubber boot off the cable adjusterLoosen the lock nut and adjust the throttle cable freeplay by turning the cable adjusterAfter adjustment, tighten the lock nut and install the rubber boot securely
CARBURETOR CHOKE
On manual choke system, check to see if the choke knob can be opened and closed completelyInspect the choke cable to see if it is bent, crimped or damaged in any way