2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 68Get this manual
FUEL SYSTEM Remove the throttle cable from the throttle valve while compressing the throttle valve springRemove the throttle valve spring
Unhook the jet needle retainer from the throttle valve and remove itRemove the spring and jet needle
Check the throttle valve and jet needle for scratch es,